/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:39:34,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:39:34,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:39:34,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:39:34,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:39:34,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:39:34,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:39:34,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:39:34,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:39:34,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:39:34,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:39:34,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:39:34,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:39:34,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:39:34,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:39:34,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:39:34,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:39:34,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:39:34,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:39:34,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:39:34,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:39:34,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:39:34,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:39:34,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:39:34,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:39:34,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:39:34,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:39:34,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:39:34,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:39:34,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:39:34,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:39:34,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:39:34,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:39:34,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:39:34,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:39:34,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:39:34,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:39:34,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:39:34,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:39:34,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:39:34,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:39:34,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:39:34,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:39:34,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:39:34,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:39:34,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:39:34,613 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:39:34,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:39:34,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:39:34,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:39:34,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:39:34,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:39:34,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:39:34,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:39:34,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:39:34,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:39:34,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:39:34,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:39:34,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:39:34,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:39:34,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:39:34,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:39:34,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:39:34,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:34,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:39:34,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:39:34,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:39:34,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:39:34,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:39:34,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:39:34,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:39:34,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:39:35,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:39:35,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:39:35,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:39:35,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:39:35,106 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:39:35,107 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 06:39:35,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eeba7162/4a80df02360a43d5b021ee803da1416b/FLAG9ee3dc285 [2020-09-25 06:39:35,782 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:39:35,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 06:39:35,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eeba7162/4a80df02360a43d5b021ee803da1416b/FLAG9ee3dc285 [2020-09-25 06:39:36,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eeba7162/4a80df02360a43d5b021ee803da1416b [2020-09-25 06:39:36,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:39:36,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:39:36,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:36,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:39:36,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:39:36,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcb8091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36, skipping insertion in model container [2020-09-25 06:39:36,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:39:36,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:39:36,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:36,724 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:39:36,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:36,850 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:39:36,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36 WrapperNode [2020-09-25 06:39:36,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:36,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:39:36,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:39:36,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:39:36,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... [2020-09-25 06:39:36,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:39:36,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:39:36,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:39:36,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:39:36,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:39:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:39:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:39:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:39:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:39:37,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 06:39:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 06:39:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 06:39:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 06:39:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 06:39:37,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:39:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:39:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:39:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:39:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:39:37,013 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:39:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:39:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:39:37,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:39:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:39:37,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:39:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:39:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:39:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:39:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:39:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 06:39:37,019 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 06:39:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 06:39:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:39:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:39:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:39:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:39:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:39:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:39:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:39:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:39:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:39:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:39:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:39:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:39:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:39:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:39:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:39:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:39:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:39:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:39:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:39:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:39:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:39:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:39:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:39:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:39:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:39:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:39:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:39:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:39:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:39:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:39:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:39:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:39:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:39:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:39:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:39:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:39:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:39:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:39:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:39:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 06:39:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:39:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:39:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 06:39:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:39:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:39:37,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:39:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:39:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:39:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:39:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:39:37,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:39:37,658 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 06:39:37,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:37 BoogieIcfgContainer [2020-09-25 06:39:37,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:39:37,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:39:37,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:39:37,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:39:37,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:39:36" (1/3) ... [2020-09-25 06:39:37,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c18b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:37, skipping insertion in model container [2020-09-25 06:39:37,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:36" (2/3) ... [2020-09-25 06:39:37,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c18b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:37, skipping insertion in model container [2020-09-25 06:39:37,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:37" (3/3) ... [2020-09-25 06:39:37,674 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 06:39:37,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:39:37,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:39:37,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:39:37,754 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:39:37,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:39:37,755 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:39:37,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:39:37,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:39:37,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:39:37,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:39:37,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:39:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 06:39:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 06:39:37,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:37,797 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:37,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:37,806 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 06:39:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:37,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097090106] [2020-09-25 06:39:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:38,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:39:43,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:39:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:39:43,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 06:39:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:39:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:39:43,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:39:43,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:43,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:43,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:39:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:43,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:39:43,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:39:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:43,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:39:43,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:43,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:43,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:39:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:39:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:43,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:39:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:43,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:39:43,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:43,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 06:39:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:43,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:39:43,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:39:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:43,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:39:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:39:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 06:39:43,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097090106] [2020-09-25 06:39:43,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:43,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:39:43,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463945575] [2020-09-25 06:39:43,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:39:43,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:43,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:39:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:39:43,517 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-09-25 06:39:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:43,777 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 06:39:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:39:43,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 06:39:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:43,794 INFO L225 Difference]: With dead ends: 100 [2020-09-25 06:39:43,795 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 06:39:43,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:39:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 06:39:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 06:39:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 06:39:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-09-25 06:39:43,863 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 82 [2020-09-25 06:39:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:43,866 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-09-25 06:39:43,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:39:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-09-25 06:39:43,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 06:39:43,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:43,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:43,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:39:43,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:43,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:43,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1818163735, now seen corresponding path program 1 times [2020-09-25 06:39:43,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:43,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65405098] [2020-09-25 06:39:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:48,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:48,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 06:39:48,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:39:48,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:48,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:39:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:39:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:39:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:39:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:39:49,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:49,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:39:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:49,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:39:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:39:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:39:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:39:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:49,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 06:39:49,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:39:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:39:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:39:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:39:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:49,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:39:49,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:39:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:39:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:39:49,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:39:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 06:39:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:49,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:49,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:39:49,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:49,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:39:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 06:39:49,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65405098] [2020-09-25 06:39:49,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:39:49,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:39:49,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631187657] [2020-09-25 06:39:49,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:39:49,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:39:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:39:49,391 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2020-09-25 06:39:49,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:49,984 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-09-25 06:39:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:39:49,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 06:39:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:49,987 INFO L225 Difference]: With dead ends: 140 [2020-09-25 06:39:49,987 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 06:39:49,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:39:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 06:39:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 06:39:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 06:39:50,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 06:39:50,006 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 86 [2020-09-25 06:39:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:50,007 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 06:39:50,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:39:50,007 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 06:39:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 06:39:50,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:50,010 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:50,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:39:50,011 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:50,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:50,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 06:39:50,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:50,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480892879] [2020-09-25 06:39:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:50,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 06:39:50,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-09-25 06:39:50,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:50,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:39:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 06:39:50,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:39:50,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:50,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:50,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:50,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:39:50,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:39:50,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:50,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:39:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:39:51,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:39:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:39:51,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:51,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:39:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:39:51,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 06:39:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:51,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 06:39:51,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:39:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:39:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:39:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:51,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:39:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:39:51,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:51,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:39:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 06:39:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:39:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 06:39:51,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480892879] [2020-09-25 06:39:51,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:51,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:39:51,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836389340] [2020-09-25 06:39:51,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:39:51,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:51,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:39:51,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:39:51,377 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 06:39:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:52,050 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 06:39:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:39:52,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 06:39:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:52,055 INFO L225 Difference]: With dead ends: 113 [2020-09-25 06:39:52,055 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 06:39:52,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:39:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 06:39:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 06:39:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 06:39:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 06:39:52,080 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 06:39:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:52,081 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 06:39:52,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:39:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 06:39:52,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 06:39:52,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:52,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:52,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:39:52,089 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:52,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 06:39:52,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:52,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886953314] [2020-09-25 06:39:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 06:39:53,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-09-25 06:39:53,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 06:39:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 06:39:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:39:53,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:39:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:39:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 53 [2020-09-25 06:39:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:39:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:53,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:39:53,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:39:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:53,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:39:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:39:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:39:53,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 06:39:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:53,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 06:39:53,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:39:53,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:53,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:39:53,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:39:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:53,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:53,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:39:53,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:39:53,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:53,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:39:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 06:39:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:39:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 06:39:53,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886953314] [2020-09-25 06:39:53,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:39:53,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 06:39:53,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695784082] [2020-09-25 06:39:53,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:39:53,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:39:53,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:39:53,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:39:53,744 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 06:39:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:39:54,612 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 06:39:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:39:54,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 06:39:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:39:54,616 INFO L225 Difference]: With dead ends: 95 [2020-09-25 06:39:54,616 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 06:39:54,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:39:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 06:39:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 06:39:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 06:39:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 06:39:54,641 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 06:39:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:39:54,642 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 06:39:54,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:39:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 06:39:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 06:39:54,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:54,650 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:54,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:39:54,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 06:39:54,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:54,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906656719] [2020-09-25 06:39:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:39:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 06:39:59,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:39:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:39:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:59,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:39:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 06:39:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:39:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:59,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:39:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:59,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:39:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:39:59,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:59,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:59,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:39:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:59,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:39:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:39:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:59,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:39:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:39:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:39:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:39:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:39:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:39:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:39:59,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:39:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:39:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:39:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:39:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:39:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:39:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:39:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:00,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:00,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:00,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 06:40:00,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:00,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:40:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:40:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 06:40:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:00,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:00,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:00,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:00,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:40:00,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:00,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:40:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:40:00,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:40:00,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:40:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:40:00,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 06:40:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:00,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:40:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 06:40:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:40:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 06:40:00,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906656719] [2020-09-25 06:40:00,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:00,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:40:00,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463597418] [2020-09-25 06:40:00,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:40:00,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:00,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:40:00,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:40:00,549 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 16 states. [2020-09-25 06:40:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:02,332 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2020-09-25 06:40:02,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 06:40:02,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-25 06:40:02,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:02,336 INFO L225 Difference]: With dead ends: 131 [2020-09-25 06:40:02,336 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 06:40:02,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=250, Invalid=1232, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 06:40:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 06:40:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 85. [2020-09-25 06:40:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 06:40:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-09-25 06:40:02,348 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 99 [2020-09-25 06:40:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:02,349 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-09-25 06:40:02,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:40:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-09-25 06:40:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 06:40:02,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:02,351 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:02,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:40:02,351 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:02,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:02,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-25 06:40:02,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:02,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081950331] [2020-09-25 06:40:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:07,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:07,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 06:40:07,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:40:07,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:07,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 06:40:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:40:07,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:40:07,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:07,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:07,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:40:07,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:07,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:40:07,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:07,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:07,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:07,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:40:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:07,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:07,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:40:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:40:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:07,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:07,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:40:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:07,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:07,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:07,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:07,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:40:07,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:07,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:07,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:40:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:07,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:07,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:07,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 06:40:07,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:07,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:40:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:40:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:07,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 06:40:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:07,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:08,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:08,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:08,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:08,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 06:40:08,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:08,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:40:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:40:08,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:40:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:40:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:40:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 06:40:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:08,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:40:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:40:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 06:40:08,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081950331] [2020-09-25 06:40:08,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:08,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 06:40:08,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068679907] [2020-09-25 06:40:08,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 06:40:08,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 06:40:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 06:40:08,879 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 26 states. [2020-09-25 06:40:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:11,422 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2020-09-25 06:40:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 06:40:11,423 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 101 [2020-09-25 06:40:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:11,426 INFO L225 Difference]: With dead ends: 113 [2020-09-25 06:40:11,426 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 06:40:11,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 06:40:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 06:40:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-09-25 06:40:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 06:40:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-09-25 06:40:11,438 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 101 [2020-09-25 06:40:11,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:11,438 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-09-25 06:40:11,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 06:40:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-09-25 06:40:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 06:40:11,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:11,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:11,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:40:11,440 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:11,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1667050223, now seen corresponding path program 2 times [2020-09-25 06:40:11,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:11,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833903335] [2020-09-25 06:40:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:16,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:16,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 06:40:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:40:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:40:16,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:16,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 06:40:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:40:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:40:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:16,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:16,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:40:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:40:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:16,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:40:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:16,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:16,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:16,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:40:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:16,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:16,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:16,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:40:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:40:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:40:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:16,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:16,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:16,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 06:40:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:16,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:40:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:40:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:40:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 06:40:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:17,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:17,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:40:17,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 06:40:17,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:17,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:40:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:40:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:40:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 06:40:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:17,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:40:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:40:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 06:40:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:40:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 06:40:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:40:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 06:40:18,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833903335] [2020-09-25 06:40:18,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:40:18,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 06:40:18,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810460143] [2020-09-25 06:40:18,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 06:40:18,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:18,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 06:40:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-09-25 06:40:18,418 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 27 states. [2020-09-25 06:40:20,537 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-09-25 06:40:21,101 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-09-25 06:40:21,484 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-09-25 06:40:21,764 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-25 06:40:21,933 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-09-25 06:40:22,242 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-09-25 06:40:22,446 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-09-25 06:40:22,636 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-09-25 06:40:22,814 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-09-25 06:40:23,086 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-09-25 06:40:23,268 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 06:40:23,443 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-09-25 06:40:23,628 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-09-25 06:40:24,066 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-09-25 06:40:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:24,203 INFO L93 Difference]: Finished difference Result 160 states and 167 transitions. [2020-09-25 06:40:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 06:40:24,204 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 109 [2020-09-25 06:40:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:24,206 INFO L225 Difference]: With dead ends: 160 [2020-09-25 06:40:24,206 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 06:40:24,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=591, Invalid=3569, Unknown=0, NotChecked=0, Total=4160 [2020-09-25 06:40:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 06:40:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2020-09-25 06:40:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 06:40:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-09-25 06:40:24,240 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 109 [2020-09-25 06:40:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:24,241 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-09-25 06:40:24,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 06:40:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-09-25 06:40:24,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 06:40:24,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:40:24,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:40:24,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:40:24,250 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:40:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:40:24,250 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 2 times [2020-09-25 06:40:24,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:40:24,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184583093] [2020-09-25 06:40:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking...