/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=0.4 --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 05:32:29,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:29,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:29,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:29,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:29,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:29,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:29,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:29,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:29,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:29,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:29,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:29,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:29,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:29,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:29,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:29,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:29,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:29,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:29,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:29,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:29,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:29,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:29,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:29,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:29,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:29,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:29,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:29,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:29,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:29,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:29,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:29,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:29,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:29,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:29,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:29,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:29,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:29,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:29,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:29,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:29,154 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 05:32:29,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:29,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:29,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:29,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:29,184 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:29,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:29,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:29,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:29,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:29,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:29,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:29,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:29,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:29,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:29,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:29,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:29,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:29,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:29,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:29,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:29,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:29,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:29,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:29,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:29,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:29,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:29,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:29,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:29,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:29,189 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:32:29,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:29,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:29,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:29,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:29,681 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:29,682 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 05:32:29,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10d9d40c9/02eed4666ec94a368383b721ceb98db3/FLAGf4508e8f4 [2020-09-25 05:32:30,380 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:30,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 05:32:30,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10d9d40c9/02eed4666ec94a368383b721ceb98db3/FLAGf4508e8f4 [2020-09-25 05:32:30,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10d9d40c9/02eed4666ec94a368383b721ceb98db3 [2020-09-25 05:32:30,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:30,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:30,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:30,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:30,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:30,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:30" (1/1) ... [2020-09-25 05:32:30,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709958c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:30, skipping insertion in model container [2020-09-25 05:32:30,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:30" (1/1) ... [2020-09-25 05:32:30,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:30,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:31,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:31,266 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:31,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:31,373 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:31,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31 WrapperNode [2020-09-25 05:32:31,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:31,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:31,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:31,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:31,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... [2020-09-25 05:32:31,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:31,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:31,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:31,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:31,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:31,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:31,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:32:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:32:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:32,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:32,212 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 05:32:32,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:32 BoogieIcfgContainer [2020-09-25 05:32:32,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:32,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:32,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:32,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:32,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:30" (1/3) ... [2020-09-25 05:32:32,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d01c7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:32, skipping insertion in model container [2020-09-25 05:32:32,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:31" (2/3) ... [2020-09-25 05:32:32,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d01c7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:32, skipping insertion in model container [2020-09-25 05:32:32,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:32" (3/3) ... [2020-09-25 05:32:32,241 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 05:32:32,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:32,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 05:32:32,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 05:32:32,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:32,329 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:32,329 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:32,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:32,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:32,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:32,330 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:32,330 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 05:32:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 05:32:32,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:32,384 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 05:32:32,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 05:32:32,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:32,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444835441] [2020-09-25 05:32:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:33,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:32:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-25 05:32:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:33,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:33,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:32:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:32:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:33,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:33,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:33,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:32:33,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:33,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:33,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:33,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:33,274 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 05:32:33,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444835441] [2020-09-25 05:32:33,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:33,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:32:33,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036469737] [2020-09-25 05:32:33,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:32:33,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:33,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:32:33,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:32:33,307 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-09-25 05:32:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:33,517 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-09-25 05:32:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:32:33,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-25 05:32:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:33,533 INFO L225 Difference]: With dead ends: 157 [2020-09-25 05:32:33,534 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 05:32:33,539 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 05:32:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 05:32:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-25 05:32:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 05:32:33,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-25 05:32:33,592 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-09-25 05:32:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:33,593 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-25 05:32:33,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:32:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-25 05:32:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 05:32:33,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:33,595 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 05:32:33,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:33,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:33,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-09-25 05:32:33,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:33,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041659070] [2020-09-25 05:32:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:33,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:33,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:32:33,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:33,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 05:32:33,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:33,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:33,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:32:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:33,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:32:33,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:33,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:33,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:33,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:33,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:33,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:33,953 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 05:32:33,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041659070] [2020-09-25 05:32:33,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:33,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:32:33,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802909633] [2020-09-25 05:32:33,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:32:33,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:33,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:32:33,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:32:33,958 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-09-25 05:32:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:34,206 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-09-25 05:32:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:34,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 05:32:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:34,208 INFO L225 Difference]: With dead ends: 92 [2020-09-25 05:32:34,209 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 05:32:34,210 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 05:32:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 05:32:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 05:32:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 05:32:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 05:32:34,221 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-09-25 05:32:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:34,222 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 05:32:34,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:32:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 05:32:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:32:34,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:34,224 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 05:32:34,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:34,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 05:32:34,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:34,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343125920] [2020-09-25 05:32:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:34,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:32:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:34,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 05:32:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:34,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:32:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:34,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:34,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:34,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:34,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:34,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:34,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:34,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:34,488 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 05:32:34,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343125920] [2020-09-25 05:32:34,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:34,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:34,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109326541] [2020-09-25 05:32:34,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:34,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:34,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:34,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:34,491 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 05:32:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:34,696 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 05:32:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:34,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 05:32:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:34,698 INFO L225 Difference]: With dead ends: 120 [2020-09-25 05:32:34,698 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 05:32:34,699 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 05:32:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 05:32:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 05:32:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 05:32:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 05:32:34,711 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 05:32:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:34,711 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 05:32:34,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 05:32:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 05:32:34,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:34,713 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 05:32:34,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:34,714 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:34,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 05:32:34,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:34,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399945590] [2020-09-25 05:32:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:35,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:35,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 05:32:35,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 05:32:35,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:35,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 05:32:35,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:32:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:35,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:35,318 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 05:32:35,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399945590] [2020-09-25 05:32:35,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:35,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:35,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617013533] [2020-09-25 05:32:35,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:35,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:35,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:35,321 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 05:32:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:35,533 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 05:32:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:32:35,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 05:32:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:35,536 INFO L225 Difference]: With dead ends: 136 [2020-09-25 05:32:35,536 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 05:32:35,537 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 05:32:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 05:32:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 05:32:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 05:32:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 05:32:35,546 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 05:32:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:35,546 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 05:32:35,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 05:32:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 05:32:35,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:35,548 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 05:32:35,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:35,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:35,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:35,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 05:32:35,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:35,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223266144] [2020-09-25 05:32:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:36,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:32:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-09-25 05:32:36,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:36,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 05:32:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:32:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 05:32:36,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:36,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:36,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:36,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:36,822 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 05:32:36,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223266144] [2020-09-25 05:32:36,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:36,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 05:32:36,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452299365] [2020-09-25 05:32:36,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 05:32:36,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 05:32:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:32:36,826 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 05:32:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:38,202 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 05:32:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:32:38,203 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 05:32:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:38,205 INFO L225 Difference]: With dead ends: 166 [2020-09-25 05:32:38,205 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 05:32:38,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 05:32:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 05:32:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 05:32:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 05:32:38,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 05:32:38,235 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 05:32:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:38,236 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 05:32:38,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 05:32:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 05:32:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 05:32:38,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:38,241 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 05:32:38,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:32:38,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:38,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:38,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 05:32:38,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:38,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602806723] [2020-09-25 05:32:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:43,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:43,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 05:32:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:32:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4738 [2020-09-25 05:32:43,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:43,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:32:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:32:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:32:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:43,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:43,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:43,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:43,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:43,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:43,121 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 05:32:43,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602806723] [2020-09-25 05:32:43,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:43,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:32:43,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833350853] [2020-09-25 05:32:43,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:32:43,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:43,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:32:43,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:43,124 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-09-25 05:32:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:43,378 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2020-09-25 05:32:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:32:43,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 05:32:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:43,380 INFO L225 Difference]: With dead ends: 133 [2020-09-25 05:32:43,380 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 05:32:43,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:32:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 05:32:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-09-25 05:32:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 05:32:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-09-25 05:32:43,389 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 43 [2020-09-25 05:32:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:43,389 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-09-25 05:32:43,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:32:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-09-25 05:32:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 05:32:43,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:43,391 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 05:32:43,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:32:43,392 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:43,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 05:32:43,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:43,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970524567] [2020-09-25 05:32:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:32:44,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-09-25 05:32:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:44,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:32:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:32:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:32:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:45,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:45,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:45,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:45,610 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 05:32:45,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970524567] [2020-09-25 05:32:45,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:45,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 05:32:45,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917879446] [2020-09-25 05:32:45,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 05:32:45,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:45,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 05:32:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:32:45,613 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 19 states. [2020-09-25 05:32:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:47,483 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2020-09-25 05:32:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 05:32:47,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 05:32:47,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:47,485 INFO L225 Difference]: With dead ends: 169 [2020-09-25 05:32:47,486 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 05:32:47,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 05:32:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 05:32:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 103. [2020-09-25 05:32:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 05:32:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 05:32:47,494 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 47 [2020-09-25 05:32:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:47,494 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 05:32:47,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 05:32:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 05:32:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 05:32:47,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:47,496 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 05:32:47,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:32:47,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:47,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:47,497 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 05:32:47,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:47,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543528886] [2020-09-25 05:32:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 05:32:52,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:32:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-09-25 05:32:52,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 05:32:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:32:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:52,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:52,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:52,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:52,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:52,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:52,714 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 05:32:52,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543528886] [2020-09-25 05:32:52,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:52,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:52,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372928800] [2020-09-25 05:32:52,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:52,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:52,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:52,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:52,717 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 6 states. [2020-09-25 05:32:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:52,940 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2020-09-25 05:32:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:32:52,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 05:32:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:52,942 INFO L225 Difference]: With dead ends: 131 [2020-09-25 05:32:52,942 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 05:32:52,943 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 05:32:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 05:32:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 05:32:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 05:32:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 05:32:52,950 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 49 [2020-09-25 05:32:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:52,950 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 05:32:52,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 05:32:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:32:52,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:52,952 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 05:32:52,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:32:52,952 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:52,953 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 05:32:52,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:52,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127447213] [2020-09-25 05:32:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:53,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:54,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:54,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 05:32:54,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-09-25 05:32:54,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:54,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 05:32:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:32:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:32:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:55,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:55,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:55,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:55,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:55,068 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 05:32:55,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127447213] [2020-09-25 05:32:55,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:55,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 05:32:55,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803783608] [2020-09-25 05:32:55,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 05:32:55,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:55,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 05:32:55,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:32:55,071 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 05:32:55,553 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-25 05:32:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:56,629 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 05:32:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 05:32:56,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 05:32:56,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:56,636 INFO L225 Difference]: With dead ends: 186 [2020-09-25 05:32:56,636 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 05:32:56,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:32:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 05:32:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 05:32:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 05:32:56,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 05:32:56,650 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 05:32:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:56,652 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 05:32:56,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 05:32:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 05:32:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 05:32:56,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:56,656 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 05:32:56,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:32:56,656 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:56,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 05:32:56,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:56,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097068549] [2020-09-25 05:32:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:33:01,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4490 [2020-09-25 05:33:01,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:33:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 05:33:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 05:33:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:01,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:01,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:01,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:01,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:01,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:01,782 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 05:33:01,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097068549] [2020-09-25 05:33:01,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:01,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:01,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929612629] [2020-09-25 05:33:01,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:01,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:01,785 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 16 states. [2020-09-25 05:33:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:03,499 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-09-25 05:33:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 05:33:03,500 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-09-25 05:33:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:03,501 INFO L225 Difference]: With dead ends: 185 [2020-09-25 05:33:03,501 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 05:33:03,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 05:33:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 05:33:03,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2020-09-25 05:33:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 05:33:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 05:33:03,510 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 05:33:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:03,510 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 05:33:03,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 05:33:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 05:33:03,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:03,512 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 05:33:03,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:33:03,512 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 05:33:03,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:03,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917609061] [2020-09-25 05:33:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 05:33:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1970 [2020-09-25 05:33:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 05:33:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:33:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:33:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:06,233 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 05:33:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:06,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:33:06,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:06,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:06,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:06,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:06,717 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 05:33:06,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917609061] [2020-09-25 05:33:06,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:06,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 05:33:06,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249904860] [2020-09-25 05:33:06,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 05:33:06,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:06,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 05:33:06,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 05:33:06,722 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 05:33:07,305 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 05:33:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:09,721 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 05:33:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 05:33:09,722 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 05:33:09,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:09,723 INFO L225 Difference]: With dead ends: 163 [2020-09-25 05:33:09,723 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 05:33:09,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 05:33:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 05:33:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 05:33:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 05:33:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 05:33:09,743 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 05:33:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:09,743 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 05:33:09,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 05:33:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 05:33:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:33:09,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:09,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:09,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:33:09,745 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 05:33:09,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:09,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776723409] [2020-09-25 05:33:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:14,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 05:33:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:33:14,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 05:33:14,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:14,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:33:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:33:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:33:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:15,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:15,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:15,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:15,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776723409] [2020-09-25 05:33:15,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:15,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 05:33:15,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437156875] [2020-09-25 05:33:15,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 05:33:15,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:15,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 05:33:15,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:33:15,346 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand 18 states. [2020-09-25 05:33:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:16,811 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2020-09-25 05:33:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 05:33:16,812 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-09-25 05:33:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:16,813 INFO L225 Difference]: With dead ends: 144 [2020-09-25 05:33:16,813 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 05:33:16,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=229, Invalid=1103, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:33:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 05:33:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2020-09-25 05:33:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 05:33:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 05:33:16,825 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 63 [2020-09-25 05:33:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:16,825 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 05:33:16,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 05:33:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 05:33:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 05:33:16,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:16,826 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, 1, 1, 1] [2020-09-25 05:33:16,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:33:16,829 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -80620955, now seen corresponding path program 1 times [2020-09-25 05:33:16,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:16,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884045074] [2020-09-25 05:33:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:17,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking...