/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/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:09,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:09,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:09,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:09,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:09,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:09,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:09,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:09,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:09,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:09,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:09,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:09,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:09,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:09,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:09,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:09,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:09,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:09,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:09,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:09,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:09,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:09,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:09,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:09,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:09,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:09,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:09,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:09,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:09,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:09,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:09,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:09,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:09,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:09,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:09,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:09,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:09,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:09,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:09,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:09,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:09,145 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 06:41:09,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:09,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:09,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:09,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:09,190 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:09,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:09,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:09,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:09,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:09,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:09,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:09,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:09,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:09,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:09,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:09,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:09,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:09,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:09,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:09,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:09,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:09,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:09,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:09,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:09,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:09,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:09,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:09,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:09,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:09,197 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 06:41:09,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:09,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:09,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:09,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:09,686 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:09,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 06:41:09,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0181d6012/7eaa23c8e4ad4eddb2483e71ccc4b81f/FLAGf40f42a1c [2020-09-25 06:41:10,418 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:10,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 06:41:10,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0181d6012/7eaa23c8e4ad4eddb2483e71ccc4b81f/FLAGf40f42a1c [2020-09-25 06:41:10,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0181d6012/7eaa23c8e4ad4eddb2483e71ccc4b81f [2020-09-25 06:41:10,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:10,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:10,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:10,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:10,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:10,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:10" (1/1) ... [2020-09-25 06:41:10,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:10, skipping insertion in model container [2020-09-25 06:41:10,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:10" (1/1) ... [2020-09-25 06:41:10,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:10,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:11,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:11,326 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:11,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:11,452 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:11,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11 WrapperNode [2020-09-25 06:41:11,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:11,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:11,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:11,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:11,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (1/1) ... [2020-09-25 06:41:11,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:11,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:11,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:11,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:11,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (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 06:41:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:11,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:41:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:41:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:41:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:41:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:41:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:41:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:41:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:41:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:41:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:41:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:41:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:41:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:41:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:41:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:41:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:41:11,647 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:41:11,648 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:41:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:41:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:41:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:41:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:41:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:41:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:41:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:41:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:41:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:41:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:41:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:41:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:41:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:41:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:41:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:41:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:41:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:41:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:41:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:41:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:41:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:41:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:41:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:41:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:41:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:41:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:41:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:41:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:41:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:41:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:41:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:41:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:41:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:41:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:41:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:41:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:41:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:41:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:41:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:41:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:41:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:41:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:41:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:41:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:41:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:41:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:41:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:41:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:41:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:41:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:41:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:41:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:41:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:41:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:41:11,670 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:41:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:12,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:12,334 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 06:41:12,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:12 BoogieIcfgContainer [2020-09-25 06:41:12,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:12,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:12,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:12,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:12,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:10" (1/3) ... [2020-09-25 06:41:12,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afaf1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:12, skipping insertion in model container [2020-09-25 06:41:12,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:11" (2/3) ... [2020-09-25 06:41:12,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afaf1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:12, skipping insertion in model container [2020-09-25 06:41:12,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:12" (3/3) ... [2020-09-25 06:41:12,357 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 06:41:12,369 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:12,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 06:41:12,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 06:41:12,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:12,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:12,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:12,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:12,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:12,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:12,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:12,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 06:41:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 06:41:12,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:12,466 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] [2020-09-25 06:41:12,467 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:12,475 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 06:41:12,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:12,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682512524] [2020-09-25 06:41:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:13,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:13,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 06:41:13,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:13,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-25 06:41:13,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:13,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:41:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:41:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:41:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:13,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:13,384 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 06:41:13,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682512524] [2020-09-25 06:41:13,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:13,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:41:13,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804708408] [2020-09-25 06:41:13,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:41:13,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:41:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:41:13,423 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-09-25 06:41:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:13,731 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-09-25 06:41:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:41:13,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-25 06:41:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:13,749 INFO L225 Difference]: With dead ends: 157 [2020-09-25 06:41:13,749 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 06:41:13,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:41:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 06:41:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 06:41:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 06:41:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-25 06:41:13,814 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-09-25 06:41:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:13,815 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-25 06:41:13,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:41:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-25 06:41:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 06:41:13,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:13,816 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] [2020-09-25 06:41:13,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:13,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:13,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:13,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-09-25 06:41:13,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:13,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32802965] [2020-09-25 06:41:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:13,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:41:14,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 06:41:14,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:14,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:41:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:14,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:14,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:14,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:14,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:41:14,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:14,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:14,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:14,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:14,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:14,187 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 06:41:14,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32802965] [2020-09-25 06:41:14,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:14,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:41:14,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94772468] [2020-09-25 06:41:14,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:41:14,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:14,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:41:14,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:41:14,193 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-09-25 06:41:14,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:14,465 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-09-25 06:41:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:14,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 06:41:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:14,468 INFO L225 Difference]: With dead ends: 92 [2020-09-25 06:41:14,468 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 06:41:14,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:41:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 06:41:14,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 06:41:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 06:41:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 06:41:14,481 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-09-25 06:41:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:14,482 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 06:41:14,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:41:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 06:41:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 06:41:14,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:14,484 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] [2020-09-25 06:41:14,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:14,484 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 06:41:14,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:14,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128450416] [2020-09-25 06:41:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:41:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 06:41:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:14,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:41:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:41:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:14,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:14,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:14,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:41:14,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:14,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:14,754 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 06:41:14,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128450416] [2020-09-25 06:41:14,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:14,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:41:14,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047305844] [2020-09-25 06:41:14,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:41:14,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:14,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:41:14,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:14,757 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 06:41:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:14,972 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 06:41:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:14,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 06:41:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:14,974 INFO L225 Difference]: With dead ends: 120 [2020-09-25 06:41:14,975 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 06:41:14,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:41:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 06:41:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 06:41:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 06:41:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 06:41:14,988 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 06:41:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:14,988 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 06:41:14,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:41:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 06:41:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 06:41:14,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:14,990 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] [2020-09-25 06:41:14,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:41:14,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 06:41:14,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:14,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654945513] [2020-09-25 06:41:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:15,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 06:41:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-25 06:41:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:15,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 06:41:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:41:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:15,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:15,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:41:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:15,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:15,627 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 06:41:15,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654945513] [2020-09-25 06:41:15,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:15,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:41:15,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156374684] [2020-09-25 06:41:15,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:41:15,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:15,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:41:15,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:15,630 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 06:41:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:15,832 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 06:41:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:41:15,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 06:41:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:15,834 INFO L225 Difference]: With dead ends: 136 [2020-09-25 06:41:15,834 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 06:41:15,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:41:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 06:41:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 06:41:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 06:41:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 06:41:15,845 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 06:41:15,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:15,845 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 06:41:15,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:41:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 06:41:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 06:41:15,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:15,847 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:15,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:41:15,848 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 06:41:15,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:15,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906424470] [2020-09-25 06:41:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:16,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:16,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:41:16,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:16,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-09-25 06:41:16,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:16,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:41:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:41:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:41:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:17,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:41:17,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:17,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:17,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906424470] [2020-09-25 06:41:17,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:17,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:41:17,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719865847] [2020-09-25 06:41:17,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:41:17,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:17,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:41:17,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:41:17,370 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 06:41:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:18,796 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 06:41:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:41:18,796 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 06:41:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:18,798 INFO L225 Difference]: With dead ends: 166 [2020-09-25 06:41:18,798 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 06:41:18,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 06:41:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 06:41:18,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 06:41:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 06:41:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 06:41:18,810 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 06:41:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:18,810 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 06:41:18,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:41:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 06:41:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 06:41:18,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:18,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:18,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:41:18,813 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:18,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 06:41:18,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:18,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209543210] [2020-09-25 06:41:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:23,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 06:41:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:41:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4748 [2020-09-25 06:41:23,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:23,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:41:23,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:41:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:23,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:23,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:23,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:23,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:41:23,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:23,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:23,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:23,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209543210] [2020-09-25 06:41:23,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:23,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:41:23,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350511638] [2020-09-25 06:41:23,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:23,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:23,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:23,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:23,730 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-09-25 06:41:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:24,013 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2020-09-25 06:41:24,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:41:24,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 06:41:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:24,017 INFO L225 Difference]: With dead ends: 133 [2020-09-25 06:41:24,017 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 06:41:24,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 06:41:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-25 06:41:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 06:41:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-25 06:41:24,036 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 43 [2020-09-25 06:41:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:24,036 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-25 06:41:24,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-25 06:41:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 06:41:24,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:24,041 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:24,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:41:24,042 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:24,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 06:41:24,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:24,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698553941] [2020-09-25 06:41:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:41:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-09-25 06:41:25,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:25,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:41:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:41:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:41:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:41:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:26,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:26,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:26,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:26,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:26,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:26,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:26,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698553941] [2020-09-25 06:41:26,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:26,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 06:41:26,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907164572] [2020-09-25 06:41:26,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 06:41:26,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:26,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 06:41:26,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:26,475 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 19 states. [2020-09-25 06:41:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:28,290 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2020-09-25 06:41:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 06:41:28,291 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 06:41:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:28,293 INFO L225 Difference]: With dead ends: 169 [2020-09-25 06:41:28,293 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 06:41:28,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 06:41:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 06:41:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2020-09-25 06:41:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 06:41:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 06:41:28,303 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 47 [2020-09-25 06:41:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:28,304 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 06:41:28,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 06:41:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 06:41:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 06:41:28,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:28,305 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:28,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:41:28,306 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 06:41:28,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:28,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683385447] [2020-09-25 06:41:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:41:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:41:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:41:33,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:33,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 06:41:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:41:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:33,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:33,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:33,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:33,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:33,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:41:33,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683385447] [2020-09-25 06:41:33,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:33,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:41:33,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879075612] [2020-09-25 06:41:33,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:41:33,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:33,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:41:33,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:33,436 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 6 states. [2020-09-25 06:41:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:33,632 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-09-25 06:41:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:41:33,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 06:41:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:33,634 INFO L225 Difference]: With dead ends: 131 [2020-09-25 06:41:33,634 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 06:41:33,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:41:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 06:41:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 06:41:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 06:41:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 06:41:33,642 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 49 [2020-09-25 06:41:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:33,642 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 06:41:33,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:41:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 06:41:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 06:41:33,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:33,644 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 06:41:33,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:41:33,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:33,645 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 06:41:33,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:33,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466369920] [2020-09-25 06:41:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:41:34,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:34,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-09-25 06:41:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 06:41:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:41:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:41:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:35,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:35,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:35,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:35,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:35,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:35,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466369920] [2020-09-25 06:41:35,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:35,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 06:41:35,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362890781] [2020-09-25 06:41:35,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 06:41:35,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:35,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 06:41:35,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:35,724 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 06:41:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:37,214 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 06:41:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 06:41:37,214 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 06:41:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:37,216 INFO L225 Difference]: With dead ends: 186 [2020-09-25 06:41:37,216 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 06:41:37,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 06:41:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 06:41:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 06:41:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 06:41:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 06:41:37,224 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 06:41:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:37,225 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 06:41:37,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 06:41:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 06:41:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:41:37,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:37,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:37,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:41:37,227 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 06:41:37,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:37,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208560893] [2020-09-25 06:41:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:41,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:41:41,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:41,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4357 [2020-09-25 06:41:41,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:41,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:41:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 06:41:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:41:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:42,576 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-09-25 06:41:42,800 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-09-25 06:41:43,163 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-09-25 06:41:43,523 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-09-25 06:41:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:44,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:44,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:44,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208560893] [2020-09-25 06:41:44,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:44,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 06:41:44,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284427188] [2020-09-25 06:41:44,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 06:41:44,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:44,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 06:41:44,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-09-25 06:41:44,141 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 22 states. [2020-09-25 06:41:44,819 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-09-25 06:41:45,052 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2020-09-25 06:41:45,293 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-09-25 06:41:45,667 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-09-25 06:41:45,935 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2020-09-25 06:41:46,139 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-09-25 06:41:46,357 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 06:41:46,627 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-09-25 06:41:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:48,052 INFO L93 Difference]: Finished difference Result 180 states and 189 transitions. [2020-09-25 06:41:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 06:41:48,053 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2020-09-25 06:41:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:48,054 INFO L225 Difference]: With dead ends: 180 [2020-09-25 06:41:48,054 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 06:41:48,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2020-09-25 06:41:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 06:41:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 143. [2020-09-25 06:41:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-25 06:41:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-09-25 06:41:48,063 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 56 [2020-09-25 06:41:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:48,064 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-09-25 06:41:48,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 06:41:48,064 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-09-25 06:41:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:41:48,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:48,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:48,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:41:48,066 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1979586344, now seen corresponding path program 1 times [2020-09-25 06:41:48,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:48,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625341924] [2020-09-25 06:41:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:41:53,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:41:53,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:41:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 06:41:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 06:41:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:53,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:53,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:53,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:41:53,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:53,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:53,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:53,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625341924] [2020-09-25 06:41:53,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:53,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:53,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485310834] [2020-09-25 06:41:53,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:53,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:53,701 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 16 states. [2020-09-25 06:41:54,162 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-09-25 06:41:54,568 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-25 06:41:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:55,675 INFO L93 Difference]: Finished difference Result 190 states and 200 transitions. [2020-09-25 06:41:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 06:41:55,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-09-25 06:41:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:55,677 INFO L225 Difference]: With dead ends: 190 [2020-09-25 06:41:55,677 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 06:41:55,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 06:41:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 06:41:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2020-09-25 06:41:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 06:41:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 06:41:55,686 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 60 [2020-09-25 06:41:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:55,687 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 06:41:55,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:41:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 06:41:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:41:55,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:55,688 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:55,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:41:55,688 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 06:41:55,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:55,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795452434] [2020-09-25 06:41:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:57,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:41:57,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-09-25 06:41:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:57,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 06:41:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:41:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:41:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:58,187 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 06:41:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:58,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:58,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795452434] [2020-09-25 06:41:58,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:58,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 06:41:58,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913081693] [2020-09-25 06:41:58,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 06:41:58,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:58,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 06:41:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:41:58,632 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 06:41:59,217 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51