/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:35:29,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:35:29,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:35:29,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:35:29,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:35:29,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:35:29,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:35:29,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:35:29,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:35:29,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:35:29,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:35:29,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:35:29,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:35:29,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:35:29,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:35:29,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:35:29,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:35:29,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:35:29,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:35:29,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:35:29,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:35:29,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:35:29,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:35:29,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:35:29,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:35:29,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:35:29,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:35:29,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:35:29,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:35:29,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:35:29,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:35:29,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:35:29,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:35:29,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:35:29,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:35:29,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:35:29,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:35:29,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:35:29,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:35:29,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:35:29,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:35:29,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:35:29,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:35:29,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:35:29,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:35:29,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:35:29,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:35:29,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:35:29,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:35:29,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:35:29,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:35:29,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:35:29,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:35:29,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:35:29,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:35:29,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:35:29,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:35:29,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:35:29,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:35:29,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:35:29,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:35:29,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:35:29,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:35:29,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:35:29,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:35:29,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:35:29,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:35:29,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:35:29,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:35:29,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:35:29,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:35:29,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:35:30,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:35:30,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:35:30,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:35:30,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:35:30,054 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:35:30,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_equal.i [2020-10-14 23:35:30,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00add1cb0/9396915d59a64e18904da3c48c765cbf/FLAG43f96fc04 [2020-10-14 23:35:30,620 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:35:30,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_append_equal.i [2020-10-14 23:35:30,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00add1cb0/9396915d59a64e18904da3c48c765cbf/FLAG43f96fc04 [2020-10-14 23:35:30,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00add1cb0/9396915d59a64e18904da3c48c765cbf [2020-10-14 23:35:30,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:35:30,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:35:30,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:35:30,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:35:30,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:35:30,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:30" (1/1) ... [2020-10-14 23:35:30,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f28744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:30, skipping insertion in model container [2020-10-14 23:35:30,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:30" (1/1) ... [2020-10-14 23:35:30,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:35:30,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:35:31,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:35:31,405 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:35:31,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:35:31,527 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:35:31,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31 WrapperNode [2020-10-14 23:35:31,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:35:31,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:35:31,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:35:31,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:35:31,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2020-10-14 23:35:31,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:35:31,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:35:31,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:35:31,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:35:31,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:35:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:35:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:35:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:35:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:35:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:35:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:35:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 23:35:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 23:35:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2020-10-14 23:35:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:35:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:35:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:35:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:35:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:35:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:35:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:35:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:35:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:35:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:35:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:35:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:35:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:35:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:35:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:35:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:35:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:35:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:35:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:35:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:35:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:35:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:35:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:35:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:35:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:35:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:35:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:35:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:35:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:35:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:35:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:35:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:35:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:35:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:35:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:35:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:35:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:35:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:35:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:35:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:35:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:35:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:35:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:35:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:35:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:35:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:35:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:35:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:35:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:35:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:35:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:35:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:35:31,723 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:35:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:35:31,724 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:35:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:35:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:35:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:35:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:35:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:35:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:35:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:35:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:35:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:35:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:35:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:35:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:35:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:35:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:35:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:35:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:35:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:35:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:35:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:35:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:35:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 23:35:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 23:35:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:35:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:35:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2020-10-14 23:35:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:35:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:35:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:35:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:35:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:35:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:35:32,156 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:35:32,313 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:35:32,314 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:35:32,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:32 BoogieIcfgContainer [2020-10-14 23:35:32,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:35:32,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:35:32,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:35:32,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:35:32,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:30" (1/3) ... [2020-10-14 23:35:32,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460659da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:32, skipping insertion in model container [2020-10-14 23:35:32,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (2/3) ... [2020-10-14 23:35:32,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460659da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:32, skipping insertion in model container [2020-10-14 23:35:32,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:32" (3/3) ... [2020-10-14 23:35:32,326 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2020-10-14 23:35:32,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:35:32,344 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:35:32,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:35:32,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:35:32,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:35:32,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:35:32,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:35:32,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:35:32,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:35:32,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:35:32,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:35:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-14 23:35:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:35:32,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:32,409 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] [2020-10-14 23:35:32,410 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:32,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1733597986, now seen corresponding path program 1 times [2020-10-14 23:35:32,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:32,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558191528] [2020-10-14 23:35:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:32,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:35,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:35,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:35:35,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:35:35,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2848 [2020-10-14 23:35:35,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:35,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:35:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:35:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:35:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:35:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:35,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:35,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:35,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:35:35,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:35,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:35:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:35,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:35,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:35:35,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 23:35:35,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:35,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:35:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:35,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:35,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:35,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:35:35,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:35,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:35:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:35:35,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:35:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 23:35:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:36,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:35:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:35:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:36,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:36,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:36,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 23:35:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:36,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:35:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:36,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558191528] [2020-10-14 23:35:36,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:36,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:35:36,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520119248] [2020-10-14 23:35:36,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:35:36,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:35:36,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:35:36,463 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 18 states. [2020-10-14 23:35:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:37,926 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2020-10-14 23:35:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:35:37,928 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-10-14 23:35:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:37,944 INFO L225 Difference]: With dead ends: 111 [2020-10-14 23:35:37,945 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:35:37,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:35:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:35:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-14 23:35:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:35:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-14 23:35:38,032 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 36 [2020-10-14 23:35:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:38,038 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-14 23:35:38,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:35:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-14 23:35:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:35:38,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:38,043 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] [2020-10-14 23:35:38,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:35:38,044 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash 761029560, now seen corresponding path program 1 times [2020-10-14 23:35:38,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:38,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198645163] [2020-10-14 23:35:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:35:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2220 [2020-10-14 23:35:40,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:40,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:35:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:35:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:35:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:40,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:40,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:40,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:35:40,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:40,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:40,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:35:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:40,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:40,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:35:40,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 23:35:40,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:40,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:35:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:40,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:40,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:40,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:40,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:35:40,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:40,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:35:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:40,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:35:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:40,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:35:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:41,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:41,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:41,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:41,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 23:35:41,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:41,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:35:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:35:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:41,930 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-14 23:35:42,275 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-10-14 23:35:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:42,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:42,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:42,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:42,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 23:35:42,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:42,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:35:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:42,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:42,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:42,896 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 40 [2020-10-14 23:35:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:42,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198645163] [2020-10-14 23:35:42,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:42,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:35:42,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925058536] [2020-10-14 23:35:42,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:35:42,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:42,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:35:42,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:35:42,918 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 22 states. [2020-10-14 23:35:43,832 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 23:35:44,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:44,667 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-14 23:35:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:35:44,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-10-14 23:35:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:44,672 INFO L225 Difference]: With dead ends: 62 [2020-10-14 23:35:44,672 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:35:44,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:35:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:35:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-10-14 23:35:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:35:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-14 23:35:44,688 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 36 [2020-10-14 23:35:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:44,689 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-14 23:35:44,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:35:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-14 23:35:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:35:44,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:44,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:35:44,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:35:44,691 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1299300418, now seen corresponding path program 1 times [2020-10-14 23:35:44,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:44,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287160898] [2020-10-14 23:35:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:35:47,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3212 [2020-10-14 23:35:47,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:47,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:35:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:35:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:35:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:48,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:48,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:35:48,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:48,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:35:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:48,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:48,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:35:48,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:35:48,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:48,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:48,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:48,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:35:48,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:48,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:48,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:35:48,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:48,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:35:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:35:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:35:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:48,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:48,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-14 23:35:48,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:48,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:35:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:35:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:49,936 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-14 23:35:50,240 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-14 23:35:51,697 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2020-10-14 23:35:51,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:51,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:51,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:35:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:51,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:35:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:52,019 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-10-14 23:35:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:52,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287160898] [2020-10-14 23:35:52,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:52,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:35:52,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283828914] [2020-10-14 23:35:52,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:35:52,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:52,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:35:52,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:35:52,045 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 22 states. [2020-10-14 23:35:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:35:53,973 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-14 23:35:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:35:53,974 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2020-10-14 23:35:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:35:53,975 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:35:53,976 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:35:53,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:35:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:35:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2020-10-14 23:35:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:35:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-14 23:35:53,987 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-14 23:35:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:35:53,987 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-14 23:35:53,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:35:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-14 23:35:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:35:53,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:35:53,989 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] [2020-10-14 23:35:53,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:35:53,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:35:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:35:53,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1623565554, now seen corresponding path program 1 times [2020-10-14 23:35:53,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:35:53,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365631445] [2020-10-14 23:35:53,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:35:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:54,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:56,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:56,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:35:56,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:35:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-10-14 23:35:56,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:56,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 23:35:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:35:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:35:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:35:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:35:57,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:35:57,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:35:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:35:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:35:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:35:57,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 23:35:57,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:35:57,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:35:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:35:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:35:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:35:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:57,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:35:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:57,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:57,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:35:57,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-14 23:35:57,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:57,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:35:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:57,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:35:57,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:35:58,309 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-14 23:35:58,654 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-10-14 23:35:59,288 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 68 [2020-10-14 23:35:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:35:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:35:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:35:59,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:35:59,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:35:59,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:35:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:35:59,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:35:59,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:35:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:35:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:35:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:35:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:35:59,691 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-14 23:35:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:35:59,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365631445] [2020-10-14 23:35:59,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:35:59,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:35:59,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043202961] [2020-10-14 23:35:59,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:35:59,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:35:59,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:35:59,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:35:59,719 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 22 states. [2020-10-14 23:36:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:01,518 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-14 23:36:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:36:01,519 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-14 23:36:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:01,521 INFO L225 Difference]: With dead ends: 66 [2020-10-14 23:36:01,521 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:36:01,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:36:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:36:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-14 23:36:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:36:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-14 23:36:01,532 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 40 [2020-10-14 23:36:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:01,533 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-14 23:36:01,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:36:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-14 23:36:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:36:01,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:01,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:01,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:36:01,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:01,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1378107786, now seen corresponding path program 1 times [2020-10-14 23:36:01,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:01,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118861765] [2020-10-14 23:36:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:04,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:36:04,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3367 [2020-10-14 23:36:04,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:04,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:04,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:36:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:04,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:04,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:04,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:04,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:04,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:04,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:04,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:05,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:05,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:05,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:36:05,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:05,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:05,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:36:05,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:05,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:05,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:05,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:36:05,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:05,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:05,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:05,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:05,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:36:05,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:05,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:05,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:05,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:05,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:05,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:05,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:05,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:05,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:36:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:05,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:36:05,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118861765] [2020-10-14 23:36:05,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:36:05,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 23:36:05,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153370040] [2020-10-14 23:36:05,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:36:05,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:36:05,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:36:05,382 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 14 states. [2020-10-14 23:36:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:06,073 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-14 23:36:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:36:06,074 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-14 23:36:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:06,075 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:36:06,076 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:36:06,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:36:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:36:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-14 23:36:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:36:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-14 23:36:06,086 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 46 [2020-10-14 23:36:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:06,086 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-14 23:36:06,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:36:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-14 23:36:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:36:06,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:06,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:06,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:36:06,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:06,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1141852148, now seen corresponding path program 1 times [2020-10-14 23:36:06,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:06,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870065587] [2020-10-14 23:36:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:08,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 23:36:08,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2270 [2020-10-14 23:36:08,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:08,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:36:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:36:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:08,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:08,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:08,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:08,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:08,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:36:08,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:08,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:08,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:09,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:09,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:36:09,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 23:36:09,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:09,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:36:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:09,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:36:09,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:09,399 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-14 23:36:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:09,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:09,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:36:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:09,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:36:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:36:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:09,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:09,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:09,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:09,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:36:09,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:09,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:36:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:36:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:09,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:36:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:09,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 23:36:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:10,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:36:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:36:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:10,984 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2020-10-14 23:36:11,536 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2020-10-14 23:36:11,980 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-14 23:36:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:12,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 23:36:12,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:12,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:36:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:36:12,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:36:12,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:12,392 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-10-14 23:36:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:36:12,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870065587] [2020-10-14 23:36:12,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:36:12,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:36:12,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922956874] [2020-10-14 23:36:12,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:36:12,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:12,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:36:12,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:36:12,413 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 28 states. [2020-10-14 23:36:12,719 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 23:36:13,305 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 23:36:13,535 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 23:36:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:15,371 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-14 23:36:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:36:15,372 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-10-14 23:36:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:15,374 INFO L225 Difference]: With dead ends: 78 [2020-10-14 23:36:15,374 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 23:36:15,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=155, Invalid=1651, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:36:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 23:36:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-10-14 23:36:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:36:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-10-14 23:36:15,386 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 46 [2020-10-14 23:36:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:15,387 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-10-14 23:36:15,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:36:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-10-14 23:36:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:36:15,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:15,395 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] [2020-10-14 23:36:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:36:15,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:15,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash -2013265752, now seen corresponding path program 1 times [2020-10-14 23:36:15,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:15,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225572900] [2020-10-14 23:36:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:36:15,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 23:36:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:36:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:36:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:36:15,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:36:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:36:15,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:36:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 23:36:15,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:36:15,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:36:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:36:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:36:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:15,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:15,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:36:15,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:36:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:15,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:36:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:36:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:36:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:36:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:15,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:15,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:36:15,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:36:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:36:15,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:15,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:36:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:36:15,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:36:15,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:36:15,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225572900] [2020-10-14 23:36:15,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:36:15,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:36:15,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277822264] [2020-10-14 23:36:15,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:36:15,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:36:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:36:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:36:15,666 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 7 states. [2020-10-14 23:36:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:36:15,841 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-14 23:36:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:36:15,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-14 23:36:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:36:15,842 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:36:15,843 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:36:15,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:36:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:36:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-14 23:36:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:36:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-14 23:36:15,865 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 43 [2020-10-14 23:36:15,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:36:15,866 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-14 23:36:15,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:36:15,866 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-14 23:36:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:36:15,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:36:15,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:36:15,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:36:15,868 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:36:15,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:36:15,868 INFO L82 PathProgramCache]: Analyzing trace with hash -381896532, now seen corresponding path program 1 times [2020-10-14 23:36:15,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:36:15,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745981766] [2020-10-14 23:36:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:36:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:36:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:16,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:36:18,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:36:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:36:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:36:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2451 [2020-10-14 23:36:18,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:36:18,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:36:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:36:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:36:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:36:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:36:18,350 ERROR L253 erpolLogProxyWrapper]: Interpolant 12 not inductive [2020-10-14 23:36:18,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:36:18,351 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 23:36:18,356 INFO L168 Benchmark]: Toolchain (without parser) took 47427.52 ms. Allocated memory was 148.4 MB in the beginning and 821.0 MB in the end (delta: 672.7 MB). Free memory was 101.6 MB in the beginning and 740.1 MB in the end (delta: -638.5 MB). Peak memory consumption was 689.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:36:18,357 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:36:18,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.20 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 170.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:36:18,358 INFO L168 Benchmark]: Boogie Preprocessor took 114.06 ms. Allocated memory is still 206.6 MB. Free memory was 170.0 MB in the beginning and 166.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:36:18,359 INFO L168 Benchmark]: RCFGBuilder took 672.66 ms. Allocated memory is still 206.6 MB. Free memory was 166.3 MB in the beginning and 114.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:36:18,360 INFO L168 Benchmark]: TraceAbstraction took 46035.11 ms. Allocated memory was 206.6 MB in the beginning and 821.0 MB in the end (delta: 614.5 MB). Free memory was 113.3 MB in the beginning and 740.1 MB in the end (delta: -626.8 MB). Peak memory consumption was 643.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:36:18,364 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 601.20 ms. Allocated memory was 148.4 MB in the beginning and 206.6 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 170.0 MB in the end (delta: -68.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.06 ms. Allocated memory is still 206.6 MB. Free memory was 170.0 MB in the beginning and 166.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 672.66 ms. Allocated memory is still 206.6 MB. Free memory was 166.3 MB in the beginning and 114.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46035.11 ms. Allocated memory was 206.6 MB in the beginning and 821.0 MB in the end (delta: 614.5 MB). Free memory was 113.3 MB in the beginning and 740.1 MB in the end (delta: -626.8 MB). Peak memory consumption was 643.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...