/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:18,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:18,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:18,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:18,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:18,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:18,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:18,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:18,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:18,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:18,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:18,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:18,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:18,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:18,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:18,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:18,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:18,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:18,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:18,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:18,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:18,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:18,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:18,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:18,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:18,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:18,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:18,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:18,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:18,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:18,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:18,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:18,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:18,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:18,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:18,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:18,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:18,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:18,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:18,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:18,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:18,782 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 10:05:18,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:18,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:18,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:18,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:18,834 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:18,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:18,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:18,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:18,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:18,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:18,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:18,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:18,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:18,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:18,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:18,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:18,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:18,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:18,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:18,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:18,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:18,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:18,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:18,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:18,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:18,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:18,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:18,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:18,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:18,840 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:19,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:19,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:19,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:19,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:19,324 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:19,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 10:05:19,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19aa5fe6/3cc7dcae135942458f2a5ec7393a649b/FLAG97ff2e092 [2020-09-25 10:05:20,045 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:20,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 10:05:20,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19aa5fe6/3cc7dcae135942458f2a5ec7393a649b/FLAG97ff2e092 [2020-09-25 10:05:20,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19aa5fe6/3cc7dcae135942458f2a5ec7393a649b [2020-09-25 10:05:20,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:20,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:20,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:20,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:20,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:20,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:20" (1/1) ... [2020-09-25 10:05:20,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:20, skipping insertion in model container [2020-09-25 10:05:20,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:20" (1/1) ... [2020-09-25 10:05:20,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:20,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:20,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:20,978 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:21,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:21,104 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:21,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21 WrapperNode [2020-09-25 10:05:21,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:21,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:21,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:21,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:21,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (1/1) ... [2020-09-25 10:05:21,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:21,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:21,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:21,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:21,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (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 10:05:21,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:21,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:21,267 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:21,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:21,276 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:21,280 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:22,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:22,016 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 10:05:22,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:22 BoogieIcfgContainer [2020-09-25 10:05:22,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:22,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:22,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:22,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:22,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:20" (1/3) ... [2020-09-25 10:05:22,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfd0b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:22, skipping insertion in model container [2020-09-25 10:05:22,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:21" (2/3) ... [2020-09-25 10:05:22,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfd0b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:22, skipping insertion in model container [2020-09-25 10:05:22,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:22" (3/3) ... [2020-09-25 10:05:22,043 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 10:05:22,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:22,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 10:05:22,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 10:05:22,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:22,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:22,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:22,141 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:22,142 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:22,142 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:22,142 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:22,142 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 10:05:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:05:22,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:22,183 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 10:05:22,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 10:05:22,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:22,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105202356] [2020-09-25 10:05:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:23,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:23,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:05:23,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-25 10:05:23,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:23,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:05:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:05:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:23,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:23,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:23,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:05:23,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:23,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:23,188 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 10:05:23,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105202356] [2020-09-25 10:05:23,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:23,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:05:23,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826452862] [2020-09-25 10:05:23,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:05:23,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:23,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:05:23,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:23,222 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 10:05:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:23,730 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-09-25 10:05:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:23,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 10:05:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:23,749 INFO L225 Difference]: With dead ends: 281 [2020-09-25 10:05:23,749 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 10:05:23,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:05:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 10:05:23,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 10:05:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 10:05:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 10:05:23,816 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23 [2020-09-25 10:05:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:23,817 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 10:05:23,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:05:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 10:05:23,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:05:23,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:23,819 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] [2020-09-25 10:05:23,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:23,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 10:05:23,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:23,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431411335] [2020-09-25 10:05:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:24,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:05:24,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:24,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 10:05:24,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:24,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:24,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:05:24,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:05:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:24,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:24,156 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 10:05:24,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431411335] [2020-09-25 10:05:24,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:24,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:24,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135069852] [2020-09-25 10:05:24,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:24,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:24,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:24,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:24,161 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 10:05:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:24,474 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 10:05:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:05:24,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 10:05:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:24,479 INFO L225 Difference]: With dead ends: 146 [2020-09-25 10:05:24,479 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 10:05:24,482 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 10:05:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 10:05:24,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 10:05:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 10:05:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 10:05:24,512 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 10:05:24,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:24,513 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 10:05:24,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 10:05:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:05:24,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:24,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:24,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:24,515 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:24,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 10:05:24,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:24,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967689762] [2020-09-25 10:05:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:25,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 10:05:25,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 10:05:25,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:25,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:05:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:25,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:25,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:05:25,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:25,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:25,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:25,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:05:25,453 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 10:05:25,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967689762] [2020-09-25 10:05:25,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:25,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:25,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891112668] [2020-09-25 10:05:25,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:25,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:25,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:25,457 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 10:05:25,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:25,732 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 10:05:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:05:25,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 10:05:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:25,735 INFO L225 Difference]: With dead ends: 162 [2020-09-25 10:05:25,735 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 10:05:25,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 10:05:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-25 10:05:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 10:05:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-25 10:05:25,748 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-25 10:05:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:25,749 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-25 10:05:25,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-25 10:05:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:05:25,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:25,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:25,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:25,751 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:25,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 10:05:25,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:25,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547820333] [2020-09-25 10:05:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:25,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 10:05:26,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 10:05:26,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:05:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:05:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 10:05:26,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:26,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:26,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:26,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,077 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 10:05:26,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547820333] [2020-09-25 10:05:26,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:26,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:05:26,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689858659] [2020-09-25 10:05:26,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:05:26,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:26,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:05:26,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:05:26,080 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-25 10:05:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:26,359 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-25 10:05:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:05:26,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 10:05:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:26,362 INFO L225 Difference]: With dead ends: 117 [2020-09-25 10:05:26,362 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 10:05:26,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 10:05:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-25 10:05:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 10:05:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-25 10:05:26,372 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-25 10:05:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:26,373 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-25 10:05:26,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:05:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-25 10:05:26,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 10:05:26,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:26,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:26,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:05:26,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 10:05:26,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:26,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265209324] [2020-09-25 10:05:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 10:05:26,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 10:05:26,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 10:05:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:05:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:26,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:26,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:26,926 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 10:05:26,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265209324] [2020-09-25 10:05:26,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:26,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:05:26,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606624002] [2020-09-25 10:05:26,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:05:26,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:05:26,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:05:26,928 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-25 10:05:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:27,140 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 10:05:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:05:27,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 10:05:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:27,142 INFO L225 Difference]: With dead ends: 112 [2020-09-25 10:05:27,144 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 10:05:27,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 10:05:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 10:05:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 10:05:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 10:05:27,163 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-25 10:05:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:27,163 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 10:05:27,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:05:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 10:05:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 10:05:27,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:27,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:27,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:05:27,169 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:27,169 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 10:05:27,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:27,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882616726] [2020-09-25 10:05:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:28,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:28,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:05:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-09-25 10:05:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:28,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:05:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:05:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:29,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:29,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:29,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:29,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:29,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:29,081 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 10:05:29,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882616726] [2020-09-25 10:05:29,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:29,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:05:29,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764079815] [2020-09-25 10:05:29,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:05:29,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:29,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:05:29,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:05:29,084 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 10 states. [2020-09-25 10:05:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:29,825 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-09-25 10:05:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:05:29,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-09-25 10:05:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:29,827 INFO L225 Difference]: With dead ends: 154 [2020-09-25 10:05:29,827 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 10:05:29,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:05:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 10:05:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 115. [2020-09-25 10:05:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 10:05:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-09-25 10:05:29,836 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 44 [2020-09-25 10:05:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:29,836 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-09-25 10:05:29,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:05:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-09-25 10:05:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:05:29,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:29,840 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, 1, 1] [2020-09-25 10:05:29,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:05:29,841 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 10:05:29,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:29,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173739071] [2020-09-25 10:05:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:30,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:35,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:35,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:05:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:05:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-09-25 10:05:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:05:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:35,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:35,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:35,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:35,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:35,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:35,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:35,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:35,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:35,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173739071] [2020-09-25 10:05:35,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:35,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:05:35,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371443945] [2020-09-25 10:05:35,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:05:35,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:35,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:05:35,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:05:35,588 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 15 states. [2020-09-25 10:05:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:36,664 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-09-25 10:05:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:05:36,665 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-25 10:05:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:36,667 INFO L225 Difference]: With dead ends: 174 [2020-09-25 10:05:36,667 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 10:05:36,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:05:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 10:05:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2020-09-25 10:05:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 10:05:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-09-25 10:05:36,676 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 45 [2020-09-25 10:05:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:36,676 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-09-25 10:05:36,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:05:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-09-25 10:05:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 10:05:36,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:36,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 10:05:36,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:05:36,680 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-25 10:05:36,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:36,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322254587] [2020-09-25 10:05:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:36,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 10:05:36,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 10:05:36,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:36,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:05:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:05:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:37,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:37,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:05:37,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322254587] [2020-09-25 10:05:37,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:37,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:05:37,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013728683] [2020-09-25 10:05:37,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:37,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:37,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:37,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:37,095 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 7 states. [2020-09-25 10:05:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:37,459 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-09-25 10:05:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:37,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 10:05:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:37,461 INFO L225 Difference]: With dead ends: 147 [2020-09-25 10:05:37,461 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 10:05:37,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:05:37,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 10:05:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-09-25 10:05:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 10:05:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-09-25 10:05:37,468 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 52 [2020-09-25 10:05:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:37,468 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-09-25 10:05:37,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-09-25 10:05:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 10:05:37,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:37,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:37,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:05:37,470 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 10:05:37,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:37,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320727369] [2020-09-25 10:05:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:41,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:05:41,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:41,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4359 [2020-09-25 10:05:41,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:41,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:05:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:05:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:42,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:42,043 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 10:05:42,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320727369] [2020-09-25 10:05:42,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:42,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:05:42,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292725434] [2020-09-25 10:05:42,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:05:42,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:42,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:05:42,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:05:42,051 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 10 states. [2020-09-25 10:05:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:42,616 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2020-09-25 10:05:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:42,617 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 10:05:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:42,618 INFO L225 Difference]: With dead ends: 179 [2020-09-25 10:05:42,618 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 10:05:42,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:05:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 10:05:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 92. [2020-09-25 10:05:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 10:05:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 10:05:42,625 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-25 10:05:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:42,625 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 10:05:42,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:05:42,625 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 10:05:42,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 10:05:42,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:42,626 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, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:42,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:05:42,627 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:42,627 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 10:05:42,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:42,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995084493] [2020-09-25 10:05:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:42,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:43,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 10:05:43,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-09-25 10:05:43,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:43,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:05:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:05:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:05:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:44,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:44,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:44,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:44,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:44,101 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 10:05:44,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995084493] [2020-09-25 10:05:44,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:44,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:05:44,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137063169] [2020-09-25 10:05:44,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:05:44,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:05:44,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:05:44,103 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-25 10:05:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:45,628 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-25 10:05:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:05:45,629 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 10:05:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:45,631 INFO L225 Difference]: With dead ends: 181 [2020-09-25 10:05:45,632 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 10:05:45,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:05:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 10:05:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-25 10:05:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 10:05:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-25 10:05:45,642 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-25 10:05:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:45,642 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-25 10:05:45,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:05:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-25 10:05:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:05:45,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:45,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:45,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:05:45,644 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-25 10:05:45,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:45,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99497940] [2020-09-25 10:05:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:50,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:50,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:05:50,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:05:50,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:05:50,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:50,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:50,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:50,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:05:50,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:05:50,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:50,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:50,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:50,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:50,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:50,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:50,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:50,808 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 10:05:50,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99497940] [2020-09-25 10:05:50,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:50,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:50,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54877790] [2020-09-25 10:05:50,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:50,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:50,811 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 6 states. [2020-09-25 10:05:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:51,062 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-09-25 10:05:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:05:51,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-25 10:05:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:51,065 INFO L225 Difference]: With dead ends: 153 [2020-09-25 10:05:51,065 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 10:05:51,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 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 10:05:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 10:05:51,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-09-25 10:05:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 10:05:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 10:05:51,078 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 64 [2020-09-25 10:05:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:51,078 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 10:05:51,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 10:05:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 10:05:51,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:51,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:51,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:05:51,080 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 10:05:51,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:51,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301372399] [2020-09-25 10:05:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:53,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:53,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 10:05:53,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-09-25 10:05:53,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:53,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 10:05:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:05:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:05:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:54,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:54,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:54,317 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 10:05:54,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301372399] [2020-09-25 10:05:54,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:54,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 10:05:54,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030981625] [2020-09-25 10:05:54,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 10:05:54,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:54,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 10:05:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:05:54,320 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 10:05:55,725 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 10:05:55,870 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-25 10:05:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:56,684 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 10:05:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:05:56,685 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 10:05:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:56,687 INFO L225 Difference]: With dead ends: 205 [2020-09-25 10:05:56,687 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 10:05:56,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 10:05:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 10:05:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 10:05:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 10:05:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 10:05:56,697 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 10:05:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:56,697 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 10:05:56,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 10:05:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 10:05:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:05:56,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:56,699 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:56,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:05:56,699 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:56,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:56,700 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 10:05:56,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:56,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399276609] [2020-09-25 10:05:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:59,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:06:01,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-09-25 10:06:01,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:06:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 10:06:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:06:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:02,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:02,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:02,207 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 10:06:02,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399276609] [2020-09-25 10:06:02,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:02,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:06:02,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969831804] [2020-09-25 10:06:02,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:06:02,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:06:02,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:06:02,216 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 10:06:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:03,398 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 10:06:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:06:03,401 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 10:06:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:03,402 INFO L225 Difference]: With dead ends: 229 [2020-09-25 10:06:03,402 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 10:06:03,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:06:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 10:06:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 10:06:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 10:06:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 10:06:03,418 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 10:06:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:03,418 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 10:06:03,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:06:03,419 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 10:06:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 10:06:03,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:03,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:03,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 10:06:03,426 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 10:06:03,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:03,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950661432] [2020-09-25 10:06:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking...