/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-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:25,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:25,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:25,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:25,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:25,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:25,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:25,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:25,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:25,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:25,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:25,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:25,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:25,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:25,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:25,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:25,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:25,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:25,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:25,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:25,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:25,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:25,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:25,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:25,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:25,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:25,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:25,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:25,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:25,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:25,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:25,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:25,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:25,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:25,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:25,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:25,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:25,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:25,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:25,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:25,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:25,592 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 06:41:25,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:25,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:25,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:25,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:25,622 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:25,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:25,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:25,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:25,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:25,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:25,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:25,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:25,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:25,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:25,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:25,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:25,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:25,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:25,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:25,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:25,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:25,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:25,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:25,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:25,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:25,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:25,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:25,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:25,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:25,627 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 06:41:26,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:26,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:26,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:26,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:26,130 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:26,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 06:41:26,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e27824e/167a3a26e7d4450e992d95065e392ad3/FLAGa2d45abe5 [2020-09-25 06:41:26,860 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:26,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 06:41:26,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e27824e/167a3a26e7d4450e992d95065e392ad3/FLAGa2d45abe5 [2020-09-25 06:41:27,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57e27824e/167a3a26e7d4450e992d95065e392ad3 [2020-09-25 06:41:27,134 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:27,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:27,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:27,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:27,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:27,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27, skipping insertion in model container [2020-09-25 06:41:27,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:27,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:27,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:27,740 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:27,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:27,860 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:27,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27 WrapperNode [2020-09-25 06:41:27,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:27,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:27,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:27,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:27,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (1/1) ... [2020-09-25 06:41:27,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:27,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:27,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:27,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:27,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (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 06:41:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 06:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 06:41:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:41:28,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:41:28,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:41:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:41:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:41:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:41:28,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:41:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:28,394 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 06:41:28,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:28,683 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 06:41:28,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:28 BoogieIcfgContainer [2020-09-25 06:41:28,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:28,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:28,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:28,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:28,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:27" (1/3) ... [2020-09-25 06:41:28,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b001be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:28, skipping insertion in model container [2020-09-25 06:41:28,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:27" (2/3) ... [2020-09-25 06:41:28,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b001be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:28, skipping insertion in model container [2020-09-25 06:41:28,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:28" (3/3) ... [2020-09-25 06:41:28,701 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 06:41:28,713 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:28,723 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:28,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:28,771 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:28,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:28,772 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:28,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:28,772 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:28,772 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:28,773 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:28,773 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 06:41:28,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 06:41:28,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:28,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:28,814 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:28,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:28,823 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 06:41:28,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:28,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600865779] [2020-09-25 06:41:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:41:29,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 06:41:29,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:41:29,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:41:29,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:29,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:41:29,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:29,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:41:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:29,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:41:29,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 06:41:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:29,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600865779] [2020-09-25 06:41:29,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:29,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:41:29,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198476500] [2020-09-25 06:41:29,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:29,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:29,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:29,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:29,464 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 06:41:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:29,935 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 06:41:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:41:29,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 06:41:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:29,970 INFO L225 Difference]: With dead ends: 230 [2020-09-25 06:41:29,971 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 06:41:29,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 06:41:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 06:41:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 06:41:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 06:41:30,083 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 06:41:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:30,083 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 06:41:30,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 06:41:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 06:41:30,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:30,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:30,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:30,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:30,089 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 06:41:30,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:30,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423993026] [2020-09-25 06:41:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 06:41:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:30,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:41:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:41:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:41:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:30,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:41:30,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 06:41:30,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:30,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:41:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:30,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423993026] [2020-09-25 06:41:30,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:30,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:41:30,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575778733] [2020-09-25 06:41:30,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:30,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:30,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:30,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:30,508 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 06:41:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:30,909 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 06:41:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:41:30,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 06:41:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:30,913 INFO L225 Difference]: With dead ends: 172 [2020-09-25 06:41:30,913 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 06:41:30,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 06:41:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 06:41:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 06:41:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 06:41:30,926 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 06:41:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:30,927 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 06:41:30,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 06:41:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:41:30,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:30,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:30,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:30,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 06:41:30,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:30,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017238810] [2020-09-25 06:41:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:35,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:35,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:41:35,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:41:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:41:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:35,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:41:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:41:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:41:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:41:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:36,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:36,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:36,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:36,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:36,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:36,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:41:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:36,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:36,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:41:36,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-25 06:41:36,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:36,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:41:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-09-25 06:41:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:36,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017238810] [2020-09-25 06:41:36,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:36,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:41:36,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49845613] [2020-09-25 06:41:36,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:36,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:36,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:36,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:36,694 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 11 states. [2020-09-25 06:41:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:37,241 INFO L93 Difference]: Finished difference Result 235 states and 259 transitions. [2020-09-25 06:41:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:41:37,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-25 06:41:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:37,244 INFO L225 Difference]: With dead ends: 235 [2020-09-25 06:41:37,244 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 06:41:37,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:41:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 06:41:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-09-25 06:41:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 06:41:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-09-25 06:41:37,275 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 51 [2020-09-25 06:41:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:37,276 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-09-25 06:41:37,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-09-25 06:41:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 06:41:37,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:37,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:37,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:41:37,280 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash -894397866, now seen corresponding path program 1 times [2020-09-25 06:41:37,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:37,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448719128] [2020-09-25 06:41:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:42,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 06:41:42,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:41:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:41:42,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:42,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:41:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:42,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:42,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:42,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:42,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:42,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:42,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:41:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:42,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:42,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:41:42,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 06:41:42,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:42,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:41:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:42,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448719128] [2020-09-25 06:41:42,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:42,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:42,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173971290] [2020-09-25 06:41:42,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:42,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:42,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:42,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:42,614 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 9 states. [2020-09-25 06:41:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:42,987 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2020-09-25 06:41:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:41:42,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-09-25 06:41:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:42,989 INFO L225 Difference]: With dead ends: 168 [2020-09-25 06:41:42,990 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 06:41:42,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:41:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 06:41:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2020-09-25 06:41:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 06:41:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2020-09-25 06:41:43,006 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 55 [2020-09-25 06:41:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:43,007 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2020-09-25 06:41:43,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2020-09-25 06:41:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 06:41:43,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:43,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:43,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:41:43,015 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 06:41:43,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:43,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976285001] [2020-09-25 06:41:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:48,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:41:48,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:41:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:41:48,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:48,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:41:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:41:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:48,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:41:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:48,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:48,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 06:41:48,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 06:41:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:48,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:41:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:41:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:48,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976285001] [2020-09-25 06:41:48,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:48,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:41:48,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207787129] [2020-09-25 06:41:48,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:48,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:48,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:48,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:48,588 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand 7 states. [2020-09-25 06:41:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:48,905 INFO L93 Difference]: Finished difference Result 194 states and 213 transitions. [2020-09-25 06:41:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:41:48,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-25 06:41:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:48,907 INFO L225 Difference]: With dead ends: 194 [2020-09-25 06:41:48,907 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 06:41:48,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:41:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 06:41:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-25 06:41:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 06:41:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-25 06:41:48,925 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 70 [2020-09-25 06:41:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:48,925 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-25 06:41:48,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-25 06:41:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 06:41:48,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:48,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:48,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:41:48,933 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:48,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 06:41:48,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:48,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487663305] [2020-09-25 06:41:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:41:53,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:41:53,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:53,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:41:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:54,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:54,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:54,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:41:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:54,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 06:41:54,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:54,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-25 06:41:54,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:54,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:41:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:41:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:41:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:54,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487663305] [2020-09-25 06:41:54,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:54,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:41:54,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254638651] [2020-09-25 06:41:54,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:54,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:54,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:54,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:54,549 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 11 states. [2020-09-25 06:41:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:54,937 INFO L93 Difference]: Finished difference Result 213 states and 231 transitions. [2020-09-25 06:41:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:41:54,938 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 06:41:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:54,941 INFO L225 Difference]: With dead ends: 213 [2020-09-25 06:41:54,941 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 06:41:54,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 06:41:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2020-09-25 06:41:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 06:41:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-09-25 06:41:54,949 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 71 [2020-09-25 06:41:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:54,949 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-09-25 06:41:54,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-09-25 06:41:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 06:41:54,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:54,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:54,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:41:54,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:54,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-25 06:41:54,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:54,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548480886] [2020-09-25 06:41:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:42:00,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:42:00,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:42:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:42:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:42:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:00,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:42:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 06:42:00,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-09-25 06:42:00,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:00,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:42:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:42:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:00,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548480886] [2020-09-25 06:42:00,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:00,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:42:00,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522173995] [2020-09-25 06:42:00,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:42:00,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:00,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:42:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:42:00,988 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 13 states. [2020-09-25 06:42:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:01,448 INFO L93 Difference]: Finished difference Result 234 states and 253 transitions. [2020-09-25 06:42:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:42:01,449 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 06:42:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:01,451 INFO L225 Difference]: With dead ends: 234 [2020-09-25 06:42:01,451 INFO L226 Difference]: Without dead ends: 174 [2020-09-25 06:42:01,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:42:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-25 06:42:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 155. [2020-09-25 06:42:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 06:42:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 06:42:01,467 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 91 [2020-09-25 06:42:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:01,467 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 06:42:01,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:42:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 06:42:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 06:42:01,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:01,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:01,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:42:01,469 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:01,470 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-25 06:42:01,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:01,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690278559] [2020-09-25 06:42:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:06,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 06:42:06,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:42:06,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:06,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:42:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:42:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:42:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:06,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:06,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:06,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:42:06,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:06,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:06,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:06,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:42:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 06:42:07,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-09-25 06:42:07,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:42:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:42:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:42:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:07,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690278559] [2020-09-25 06:42:07,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:07,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:42:07,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955066070] [2020-09-25 06:42:07,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:42:07,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:42:07,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:42:07,752 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 15 states. [2020-09-25 06:42:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:08,305 INFO L93 Difference]: Finished difference Result 255 states and 275 transitions. [2020-09-25 06:42:08,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 06:42:08,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-25 06:42:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:08,308 INFO L225 Difference]: With dead ends: 255 [2020-09-25 06:42:08,309 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 06:42:08,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-25 06:42:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 06:42:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 176. [2020-09-25 06:42:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 06:42:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-09-25 06:42:08,329 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 111 [2020-09-25 06:42:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:08,331 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-09-25 06:42:08,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:42:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-09-25 06:42:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 06:42:08,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:08,333 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 06:42:08,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:42:08,333 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:08,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-25 06:42:08,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:08,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042955585] [2020-09-25 06:42:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:11,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:42:11,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:42:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2630 [2020-09-25 06:42:11,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:11,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:42:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 06:42:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:42:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:11,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:11,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:42:11,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:11,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:11,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:11,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:42:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking...