/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=NARROWEST --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/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:33:16,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:33:16,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:33:16,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:33:16,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:33:16,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:33:16,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:33:16,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:33:16,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:33:16,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:33:16,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:33:16,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:33:16,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:33:16,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:33:16,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:33:16,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:33:16,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:33:16,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:33:16,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:33:16,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:33:16,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:33:16,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:33:16,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:33:16,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:33:16,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:33:16,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:33:16,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:33:16,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:33:16,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:33:16,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:33:16,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:33:16,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:33:16,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:33:16,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:33:16,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:33:16,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:33:16,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:33:16,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:33:16,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:33:16,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:33:16,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:33:16,449 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 [2020-10-13 10:33:16,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:33:16,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:33:16,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:33:16,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:33:16,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:33:16,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:33:16,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:33:16,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:33:16,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:33:16,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:33:16,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:33:16,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:33:16,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:33:16,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:33:16,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:33:16,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:33:16,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:33:16,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:33:16,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:33:16,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:33:16,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:33:16,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:33:16,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:33:16,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:33:16,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:33:16,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:33:16,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:33:16,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:33:16,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:33:16,508 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:33:16,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:33:16,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:33:16,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:33:16,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:33:16,823 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:33:16,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-13 10:33:16,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cbcd01d9/36deecdfe07a4f289768ff85a2c019a4/FLAGa937885f6 [2020-10-13 10:33:17,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:33:17,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-13 10:33:17,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cbcd01d9/36deecdfe07a4f289768ff85a2c019a4/FLAGa937885f6 [2020-10-13 10:33:17,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cbcd01d9/36deecdfe07a4f289768ff85a2c019a4 [2020-10-13 10:33:17,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:33:17,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:33:17,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:33:17,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:33:17,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:33:17,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:33:17" (1/1) ... [2020-10-13 10:33:17,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6231c00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:17, skipping insertion in model container [2020-10-13 10:33:17,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:33:17" (1/1) ... [2020-10-13 10:33:17,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:33:17,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:33:18,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:33:18,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:33:18,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:33:18,410 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:33:18,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18 WrapperNode [2020-10-13 10:33:18,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:33:18,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:33:18,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:33:18,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:33:18,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (1/1) ... [2020-10-13 10:33:18,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:33:18,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:33:18,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:33:18,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:33:18,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (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 [2020-10-13 10:33:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:33:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-13 10:33:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-13 10:33:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:33:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:33:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:33:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:33:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:33:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:33:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:33:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:33:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:33:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:33:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:33:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:33:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:33:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:33:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:33:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:33:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:33:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:33:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:33:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:33:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:33:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:33:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:33:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:33:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:33:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:33:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:33:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:33:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:33:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:33:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:33:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:33:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:33:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:33:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:33:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:33:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:33:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:33:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:33:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:33:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:33:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:33:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:33:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:33:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:33:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:33:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:33:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:33:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:33:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:33:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:33:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:33:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:33:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-13 10:33:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:33:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:33:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-13 10:33:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:33:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-13 10:33:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:33:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-13 10:33:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-13 10:33:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:33:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:33:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:33:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:33:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:33:18,900 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:33:19,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:33:19,147 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-13 10:33:19,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:33:19 BoogieIcfgContainer [2020-10-13 10:33:19,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:33:19,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:33:19,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:33:19,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:33:19,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:33:17" (1/3) ... [2020-10-13 10:33:19,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519a34c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:33:19, skipping insertion in model container [2020-10-13 10:33:19,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:33:18" (2/3) ... [2020-10-13 10:33:19,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519a34c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:33:19, skipping insertion in model container [2020-10-13 10:33:19,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:33:19" (3/3) ... [2020-10-13 10:33:19,160 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-10-13 10:33:19,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:33:19,180 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:33:19,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:33:19,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:33:19,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:33:19,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:33:19,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:33:19,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:33:19,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:33:19,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:33:19,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:33:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-13 10:33:19,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:33:19,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:19,254 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] [2020-10-13 10:33:19,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:19,264 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-10-13 10:33:19,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:19,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052280483] [2020-10-13 10:33:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:19,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:33:19,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:33:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-13 10:33:19,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 10:33:19,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:19,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:33:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:33:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:33:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:19,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:19,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:33:19,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:19,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:33:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 10:33:19,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 10:33:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:19,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:19,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:33:19,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:19,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:33:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:33:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:33:19,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:33:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:33:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:19,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:19,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:33:19,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:33:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:19,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:33:19,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052280483] [2020-10-13 10:33:19,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:33:19,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:33:19,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376621032] [2020-10-13 10:33:19,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:33:19,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:19,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:33:19,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:33:19,994 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-10-13 10:33:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:20,242 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-10-13 10:33:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:33:20,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-13 10:33:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:20,257 INFO L225 Difference]: With dead ends: 136 [2020-10-13 10:33:20,257 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 10:33:20,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:33:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 10:33:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-13 10:33:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 10:33:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-13 10:33:20,318 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-10-13 10:33:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:20,319 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-13 10:33:20,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:33:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-13 10:33:20,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:33:20,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:20,323 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:33:20,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:33:20,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:20,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:20,324 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-10-13 10:33:20,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:20,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365281475] [2020-10-13 10:33:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:20,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:33:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:33:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3708 [2020-10-13 10:33:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:33:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 10:33:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:33:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:24,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:24,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:24,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:24,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:24,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:24,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:24,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:24,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:24,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:24,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:33:24,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:24,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:24,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:33:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:24,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:24,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 10:33:24,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:24,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:33:24,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:33:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:24,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:24,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:33:24,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:24,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365281475] [2020-10-13 10:33:24,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:33:24,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:33:24,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084014908] [2020-10-13 10:33:24,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:33:24,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:24,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:33:24,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:33:24,299 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 9 states. [2020-10-13 10:33:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:24,854 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2020-10-13 10:33:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:33:24,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-13 10:33:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:24,857 INFO L225 Difference]: With dead ends: 109 [2020-10-13 10:33:24,857 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:33:24,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:33:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:33:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-10-13 10:33:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 10:33:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-10-13 10:33:24,892 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 44 [2020-10-13 10:33:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:24,892 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-10-13 10:33:24,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:33:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-10-13 10:33:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:33:24,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:24,898 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:33:24,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:33:24,898 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:24,899 INFO L82 PathProgramCache]: Analyzing trace with hash 580201516, now seen corresponding path program 1 times [2020-10-13 10:33:24,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:24,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181538191] [2020-10-13 10:33:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:25,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:33:25,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-13 10:33:25,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:33:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:33:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:33:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:25,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:25,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:25,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:25,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:25,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:25,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:25,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:25,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:25,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:25,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:25,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:33:25,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:33:25,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:33:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:25,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:25,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:25,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:25,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:33:25,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:25,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:25,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:33:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:25,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:25,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:25,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181538191] [2020-10-13 10:33:25,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:33:25,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 10:33:25,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069244485] [2020-10-13 10:33:25,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:33:25,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:33:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:33:25,774 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 11 states. [2020-10-13 10:33:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:26,224 INFO L93 Difference]: Finished difference Result 132 states and 160 transitions. [2020-10-13 10:33:26,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:33:26,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-13 10:33:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:26,226 INFO L225 Difference]: With dead ends: 132 [2020-10-13 10:33:26,226 INFO L226 Difference]: Without dead ends: 87 [2020-10-13 10:33:26,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:33:26,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-13 10:33:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2020-10-13 10:33:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:33:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-13 10:33:26,239 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 44 [2020-10-13 10:33:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:26,240 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-13 10:33:26,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:33:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-13 10:33:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:33:26,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:26,242 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:33:26,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:33:26,242 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1108742226, now seen corresponding path program 1 times [2020-10-13 10:33:26,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:26,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797486312] [2020-10-13 10:33:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:33:27,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:33:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-13 10:33:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:33:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:33:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:33:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:27,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:27,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:27,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:27,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:33:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:33:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:27,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:33:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:33:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:33:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 10:33:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:27,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:27,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:33:27,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:33:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:33:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:27,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797486312] [2020-10-13 10:33:27,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:27,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:33:27,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869097711] [2020-10-13 10:33:27,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:33:27,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:27,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:33:27,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:33:27,299 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 11 states. [2020-10-13 10:33:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:27,763 INFO L93 Difference]: Finished difference Result 133 states and 165 transitions. [2020-10-13 10:33:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:33:27,764 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-13 10:33:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:27,766 INFO L225 Difference]: With dead ends: 133 [2020-10-13 10:33:27,766 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:33:27,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:33:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:33:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2020-10-13 10:33:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 10:33:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-13 10:33:27,804 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 44 [2020-10-13 10:33:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:27,809 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-13 10:33:27,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:33:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-13 10:33:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:33:27,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:27,813 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:33:27,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:33:27,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1436804865, now seen corresponding path program 1 times [2020-10-13 10:33:27,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:27,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223659598] [2020-10-13 10:33:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:28,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:33:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:33:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-13 10:33:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:33:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:33:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:33:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:28,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:28,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:28,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:28,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:28,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:28,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:29,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:33:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:33:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:33:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:33:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:33:29,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:33:29,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:33:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:33:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:29,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:29,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:33:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 10:33:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:29,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:29,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:29,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223659598] [2020-10-13 10:33:29,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:29,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:33:29,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272955902] [2020-10-13 10:33:29,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:33:29,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:33:29,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:33:29,123 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 12 states. [2020-10-13 10:33:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:29,713 INFO L93 Difference]: Finished difference Result 131 states and 161 transitions. [2020-10-13 10:33:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:33:29,713 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-13 10:33:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:29,715 INFO L225 Difference]: With dead ends: 131 [2020-10-13 10:33:29,715 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 10:33:29,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:33:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 10:33:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2020-10-13 10:33:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:33:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-10-13 10:33:29,727 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 47 [2020-10-13 10:33:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:29,727 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-10-13 10:33:29,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:33:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-10-13 10:33:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:33:29,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:29,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:33:29,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:33:29,729 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:29,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:29,730 INFO L82 PathProgramCache]: Analyzing trace with hash -618929005, now seen corresponding path program 1 times [2020-10-13 10:33:29,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:29,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721500875] [2020-10-13 10:33:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:34,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:33:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:33:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:33:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:33:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:33:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:33:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:34,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:34,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:34,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:34,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:34,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:34,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:34,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:33:34,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:33:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:33:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:33:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:34,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:33:34,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:34,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:33:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:34,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:33:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:34,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721500875] [2020-10-13 10:33:34,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:34,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:33:34,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804326867] [2020-10-13 10:33:35,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:33:35,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:35,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:33:35,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:33:35,001 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 12 states. [2020-10-13 10:33:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:35,526 INFO L93 Difference]: Finished difference Result 140 states and 169 transitions. [2020-10-13 10:33:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:33:35,526 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-13 10:33:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:35,528 INFO L225 Difference]: With dead ends: 140 [2020-10-13 10:33:35,528 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 10:33:35,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:33:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 10:33:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2020-10-13 10:33:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:33:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2020-10-13 10:33:35,547 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 48 [2020-10-13 10:33:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:35,548 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2020-10-13 10:33:35,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:33:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2020-10-13 10:33:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:33:35,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:35,550 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:33:35,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:33:35,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1987094549, now seen corresponding path program 1 times [2020-10-13 10:33:35,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:35,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363068529] [2020-10-13 10:33:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:35,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:35,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:40,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:40,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:33:40,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:33:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:33:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:33:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:33:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:33:40,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:40,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:40,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:40,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:40,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:40,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:40,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:33:40,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:33:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:40,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:40,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:33:40,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:33:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:33:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:33:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:33:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:33:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:40,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:40,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:40,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:40,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:40,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363068529] [2020-10-13 10:33:40,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:40,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:33:40,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642489261] [2020-10-13 10:33:40,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:33:40,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:33:40,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:33:40,782 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand 12 states. [2020-10-13 10:33:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:41,241 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2020-10-13 10:33:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:33:41,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-13 10:33:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:41,243 INFO L225 Difference]: With dead ends: 143 [2020-10-13 10:33:41,243 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 10:33:41,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:33:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 10:33:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2020-10-13 10:33:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 10:33:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2020-10-13 10:33:41,254 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 48 [2020-10-13 10:33:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:41,255 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2020-10-13 10:33:41,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:33:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2020-10-13 10:33:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:33:41,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:41,256 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-13 10:33:41,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:33:41,257 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash 652787176, now seen corresponding path program 1 times [2020-10-13 10:33:41,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:41,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779763353] [2020-10-13 10:33:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:46,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:33:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:33:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:33:46,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:33:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:33:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:33:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:46,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:46,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:46,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:46,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:46,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:33:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:33:46,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:33:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:33:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:46,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:46,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:33:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:33:46,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:46,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:33:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:46,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:33:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:46,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:46,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:46,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:46,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:33:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:46,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 10:33:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:46,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:33:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:46,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779763353] [2020-10-13 10:33:46,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:46,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:33:46,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776100553] [2020-10-13 10:33:46,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:33:46,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:46,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:33:46,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:33:46,464 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand 13 states. [2020-10-13 10:33:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:46,953 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2020-10-13 10:33:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:33:46,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-13 10:33:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:46,955 INFO L225 Difference]: With dead ends: 135 [2020-10-13 10:33:46,955 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:33:46,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:33:46,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:33:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2020-10-13 10:33:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:33:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2020-10-13 10:33:46,964 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 51 [2020-10-13 10:33:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:46,964 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2020-10-13 10:33:46,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:33:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2020-10-13 10:33:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:33:46,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:46,966 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:33:46,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:33:46,966 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:46,967 INFO L82 PathProgramCache]: Analyzing trace with hash 120721786, now seen corresponding path program 2 times [2020-10-13 10:33:46,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:46,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063877022] [2020-10-13 10:33:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:33:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-13 10:33:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:33:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 10:33:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:33:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:47,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:47,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:47,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:47,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:47,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:47,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:47,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:33:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 10:33:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:33:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:33:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:33:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:33:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:33:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:47,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:33:47,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:33:47,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:33:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:33:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 10:33:47,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063877022] [2020-10-13 10:33:47,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:33:47,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 10:33:47,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773054282] [2020-10-13 10:33:47,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:33:47,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:47,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:33:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:33:47,449 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 12 states. [2020-10-13 10:33:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:47,922 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2020-10-13 10:33:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:33:47,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-13 10:33:47,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:47,925 INFO L225 Difference]: With dead ends: 97 [2020-10-13 10:33:47,925 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 10:33:47,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:33:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 10:33:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-10-13 10:33:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:33:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2020-10-13 10:33:47,934 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 52 [2020-10-13 10:33:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:47,935 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2020-10-13 10:33:47,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:33:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2020-10-13 10:33:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:33:47,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:47,936 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:33:47,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:33:47,936 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:47,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-10-13 10:33:47,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:47,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210888866] [2020-10-13 10:33:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 10:33:48,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 10:33:48,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:33:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 10:33:48,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:33:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:48,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:48,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:48,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:48,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:48,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:48,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:48,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:33:48,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 10:33:48,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:33:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:33:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:48,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:48,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:33:48,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:33:48,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:48,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:33:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:33:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:33:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:33:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 10:33:48,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210888866] [2020-10-13 10:33:48,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:48,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:33:48,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017912729] [2020-10-13 10:33:48,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:33:48,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:48,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:33:48,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:33:48,411 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 14 states. [2020-10-13 10:33:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:49,158 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2020-10-13 10:33:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:33:49,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-13 10:33:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:49,160 INFO L225 Difference]: With dead ends: 103 [2020-10-13 10:33:49,160 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:33:49,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:33:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:33:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2020-10-13 10:33:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 10:33:49,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2020-10-13 10:33:49,169 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 53 [2020-10-13 10:33:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:49,169 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2020-10-13 10:33:49,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:33:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2020-10-13 10:33:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:33:49,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:49,170 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:33:49,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:33:49,171 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-10-13 10:33:49,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:49,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113795187] [2020-10-13 10:33:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:49,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:52,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:52,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:33:52,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:33:52,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3717 [2020-10-13 10:33:52,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:52,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:33:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:33:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:33:52,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:53,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:53,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:53,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:53,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:53,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:53,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:33:53,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:53,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:33:53,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 10:33:53,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:33:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:33:53,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-13 10:33:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:33:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:53,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:53,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:53,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:53,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:33:53,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:33:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:53,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:33:53,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:53,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:33:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:33:53,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:33:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:53,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:53,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:33:53,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113795187] [2020-10-13 10:33:53,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:53,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:33:53,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203101256] [2020-10-13 10:33:53,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:33:53,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:33:53,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:33:53,495 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand 21 states. [2020-10-13 10:33:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:54,590 INFO L93 Difference]: Finished difference Result 145 states and 186 transitions. [2020-10-13 10:33:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:33:54,592 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2020-10-13 10:33:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:54,595 INFO L225 Difference]: With dead ends: 145 [2020-10-13 10:33:54,597 INFO L226 Difference]: Without dead ends: 141 [2020-10-13 10:33:54,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:33:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-13 10:33:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2020-10-13 10:33:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:33:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 139 transitions. [2020-10-13 10:33:54,623 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 139 transitions. Word has length 54 [2020-10-13 10:33:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:54,624 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 139 transitions. [2020-10-13 10:33:54,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:33:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 139 transitions. [2020-10-13 10:33:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:33:54,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:54,625 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:33:54,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:33:54,626 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:54,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:54,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1068083196, now seen corresponding path program 1 times [2020-10-13 10:33:54,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:54,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098318111] [2020-10-13 10:33:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:57,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:33:57,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:33:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2942 [2020-10-13 10:33:57,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:33:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:33:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:33:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:57,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:57,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:57,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:57,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:57,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:33:57,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:57,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:57,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:57,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:57,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:33:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 10:33:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:33:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:33:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:57,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:57,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:33:57,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:33:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:33:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:57,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:57,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:33:57,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:57,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:57,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:33:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:33:57,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098318111] [2020-10-13 10:33:57,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:57,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:33:57,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722583974] [2020-10-13 10:33:57,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:33:57,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:57,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:33:57,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:33:57,787 INFO L87 Difference]: Start difference. First operand 110 states and 139 transitions. Second operand 12 states. [2020-10-13 10:33:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:33:58,205 INFO L93 Difference]: Finished difference Result 184 states and 233 transitions. [2020-10-13 10:33:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:33:58,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-13 10:33:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:33:58,208 INFO L225 Difference]: With dead ends: 184 [2020-10-13 10:33:58,208 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 10:33:58,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:33:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 10:33:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2020-10-13 10:33:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-13 10:33:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 144 transitions. [2020-10-13 10:33:58,223 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 144 transitions. Word has length 54 [2020-10-13 10:33:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:33:58,223 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 144 transitions. [2020-10-13 10:33:58,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:33:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 144 transitions. [2020-10-13 10:33:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:33:58,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:33:58,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:33:58,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:33:58,225 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:33:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:33:58,226 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-10-13 10:33:58,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:33:58,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784781735] [2020-10-13 10:33:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:33:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:58,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:58,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 10:33:58,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:33:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-13 10:33:58,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:33:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 10:33:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:33:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:58,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:33:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:58,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:58,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:58,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:33:58,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:58,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:58,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:33:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:58,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:58,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:33:58,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:33:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:33:58,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:33:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:33:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:58,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:58,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:33:58,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:58,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 10:33:58,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:58,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:33:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:33:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:33:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:59,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:59,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:33:59,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:33:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:33:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:33:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:33:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:33:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:33:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:33:59,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:33:59,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:33:59,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:33:59,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 10:33:59,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:33:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:33:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:33:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:33:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:33:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 10:33:59,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784781735] [2020-10-13 10:33:59,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:33:59,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:33:59,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603998808] [2020-10-13 10:33:59,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:33:59,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:33:59,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:33:59,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:33:59,313 INFO L87 Difference]: Start difference. First operand 116 states and 144 transitions. Second operand 17 states. [2020-10-13 10:34:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:00,274 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2020-10-13 10:34:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:34:00,275 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-13 10:34:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:00,277 INFO L225 Difference]: With dead ends: 139 [2020-10-13 10:34:00,277 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 10:34:00,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:34:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 10:34:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2020-10-13 10:34:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 10:34:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2020-10-13 10:34:00,295 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 55 [2020-10-13 10:34:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:00,295 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2020-10-13 10:34:00,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:34:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2020-10-13 10:34:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:34:00,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:00,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 10:34:00,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:34:00,303 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-10-13 10:34:00,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:00,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792951542] [2020-10-13 10:34:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:00,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:01,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:34:02,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:34:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:02,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:34:02,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:34:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:34:02,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:02,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:02,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 10:34:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:34:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:34:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:34:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:34:02,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:34:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:34:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:34:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:34:02,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:34:02,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:34:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:02,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:34:02,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792951542] [2020-10-13 10:34:02,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:02,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:34:02,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284399720] [2020-10-13 10:34:02,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:34:02,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:02,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:34:02,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:34:02,596 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand 14 states. [2020-10-13 10:34:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:03,225 INFO L93 Difference]: Finished difference Result 204 states and 264 transitions. [2020-10-13 10:34:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:34:03,226 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-13 10:34:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:03,228 INFO L225 Difference]: With dead ends: 204 [2020-10-13 10:34:03,229 INFO L226 Difference]: Without dead ends: 137 [2020-10-13 10:34:03,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:34:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-13 10:34:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-10-13 10:34:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 10:34:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2020-10-13 10:34:03,247 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 57 [2020-10-13 10:34:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:03,247 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2020-10-13 10:34:03,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:34:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2020-10-13 10:34:03,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:34:03,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:03,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:34:03,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:34:03,249 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-10-13 10:34:03,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:03,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022628647] [2020-10-13 10:34:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:34:03,263 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:34:03,263 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:34:03,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:34:03,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:34:03 BoogieIcfgContainer [2020-10-13 10:34:03,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:34:03,294 INFO L168 Benchmark]: Toolchain (without parser) took 45551.97 ms. Allocated memory was 141.6 MB in the beginning and 671.1 MB in the end (delta: 529.5 MB). Free memory was 103.0 MB in the beginning and 153.7 MB in the end (delta: -50.6 MB). Peak memory consumption was 478.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:34:03,295 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-13 10:34:03,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.48 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 167.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:34:03,303 INFO L168 Benchmark]: Boogie Preprocessor took 81.92 ms. Allocated memory is still 205.0 MB. Free memory was 167.2 MB in the beginning and 164.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:34:03,307 INFO L168 Benchmark]: RCFGBuilder took 657.15 ms. Allocated memory is still 205.0 MB. Free memory was 164.4 MB in the beginning and 113.2 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:34:03,308 INFO L168 Benchmark]: TraceAbstraction took 44137.88 ms. Allocated memory was 205.0 MB in the beginning and 671.1 MB in the end (delta: 466.1 MB). Free memory was 112.3 MB in the beginning and 153.7 MB in the end (delta: -41.4 MB). Peak memory consumption was 424.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:34:03,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.48 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 167.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.92 ms. Allocated memory is still 205.0 MB. Free memory was 167.2 MB in the beginning and 164.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 657.15 ms. Allocated memory is still 205.0 MB. Free memory was 164.4 MB in the beginning and 113.2 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44137.88 ms. Allocated memory was 205.0 MB in the beginning and 671.1 MB in the end (delta: 466.1 MB). Free memory was 112.3 MB in the beginning and 153.7 MB in the end (delta: -41.4 MB). Peak memory consumption was 424.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.0s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 789 SDtfs, 990 SDslu, 4436 SDs, 0 SdLazy, 5186 SolverSat, 476 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 411 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 207 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 745 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 674 ConstructedInterpolants, 0 QuantifiedInterpolants, 161397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 101/184 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...