/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:27:53,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:27:53,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:27:53,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:27:53,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:27:53,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:27:53,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:27:53,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:27:53,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:27:53,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:27:53,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:27:53,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:27:53,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:27:53,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:27:53,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:27:53,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:27:53,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:27:53,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:27:53,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:27:53,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:27:53,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:27:53,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:27:53,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:27:53,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:27:53,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:27:53,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:27:53,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:27:53,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:27:53,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:27:53,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:27:53,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:27:53,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:27:53,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:27:53,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:27:53,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:27:53,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:27:53,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:27:53,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:27:53,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:27:53,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:27:53,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:27:53,254 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 [2020-10-29 09:27:53,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:27:53,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:27:53,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:27:53,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:27:53,311 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:27:53,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:27:53,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:27:53,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:27:53,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:27:53,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:27:53,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:27:53,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:27:53,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:27:53,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:27:53,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:27:53,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:27:53,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:27:53,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:27:53,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:27:53,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:27:53,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:27:53,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:27:53,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:27:53,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:27:53,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:27:53,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:27:53,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:27:53,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:27:53,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:27:53,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:27:53,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:27:53,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:27:53,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:27:53,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:27:53,766 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:27:53,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2020-10-29 09:27:53,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8179aa6d6/8228d7d102a14f1283a16241ba159a1c/FLAGd504bf603 [2020-10-29 09:27:54,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:27:54,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2020-10-29 09:27:54,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8179aa6d6/8228d7d102a14f1283a16241ba159a1c/FLAGd504bf603 [2020-10-29 09:27:54,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8179aa6d6/8228d7d102a14f1283a16241ba159a1c [2020-10-29 09:27:54,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:27:54,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:27:54,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:27:54,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:27:54,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:27:54,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:27:54" (1/1) ... [2020-10-29 09:27:54,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609bc598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:54, skipping insertion in model container [2020-10-29 09:27:54,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:27:54" (1/1) ... [2020-10-29 09:27:54,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:27:55,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:27:55,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:27:55,380 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:27:55,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:27:55,541 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:27:55,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55 WrapperNode [2020-10-29 09:27:55,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:27:55,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:27:55,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:27:55,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:27:55,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (1/1) ... [2020-10-29 09:27:55,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:27:55,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:27:55,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:27:55,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:27:55,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (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 [2020-10-29 09:27:55,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:27:55,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-29 09:27:55,745 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-29 09:27:55,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2020-10-29 09:27:55,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:27:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:27:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:27:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:27:55,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:27:55,747 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:27:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:27:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:27:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:27:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:27:55,748 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:27:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:27:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:27:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:27:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:27:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:27:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:27:55,754 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:27:55,755 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:27:55,755 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:27:55,755 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:27:55,755 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:27:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:27:55,756 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:27:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:27:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:27:55,757 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:27:55,758 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:27:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:27:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:27:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:27:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:27:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:27:55,759 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:27:55,760 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:27:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:27:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:27:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:27:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:27:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:27:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:27:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:27:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:27:55,764 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:27:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:27:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:27:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:27:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:27:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:27:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:27:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:27:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:27:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:27:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:27:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:27:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:27:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:27:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:27:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:27:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:27:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:27:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:27:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:27:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-29 09:27:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:27:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:27:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2020-10-29 09:27:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:27:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:27:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:27:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:27:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:27:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:27:56,245 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:27:56,432 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:27:56,433 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:27:56,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:27:56 BoogieIcfgContainer [2020-10-29 09:27:56,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:27:56,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:27:56,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:27:56,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:27:56,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:27:54" (1/3) ... [2020-10-29 09:27:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691761f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:27:56, skipping insertion in model container [2020-10-29 09:27:56,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:27:55" (2/3) ... [2020-10-29 09:27:56,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691761f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:27:56, skipping insertion in model container [2020-10-29 09:27:56,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:27:56" (3/3) ... [2020-10-29 09:27:56,444 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2020-10-29 09:27:56,456 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:27:56,461 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:27:56,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:27:56,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:27:56,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:27:56,504 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:27:56,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:27:56,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:27:56,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:27:56,504 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:27:56,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:27:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-29 09:27:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 09:27:56,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:56,530 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] [2020-10-29 09:27:56,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash 278959345, now seen corresponding path program 1 times [2020-10-29 09:27:56,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:56,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319716621] [2020-10-29 09:27:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:57,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:59,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:27:59,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:27:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-10-29 09:27:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:59,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:27:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:27:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:27:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:27:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:59,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:27:59,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:27:59,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:59,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:27:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:59,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:27:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:27:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:27:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:59,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:27:59,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:59,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:27:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:59,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:59,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:27:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:59,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:27:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:27:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 09:27:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:59,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:27:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:27:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:27:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:59,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:27:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:27:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:27:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:27:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:27:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:27:59,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:27:59,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:27:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:27:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:27:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:27:59,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:27:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:27:59,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319716621] [2020-10-29 09:27:59,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:27:59,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:27:59,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881387908] [2020-10-29 09:27:59,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:27:59,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:27:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:27:59,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:27:59,508 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 7 states. [2020-10-29 09:27:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:27:59,884 INFO L93 Difference]: Finished difference Result 113 states and 153 transitions. [2020-10-29 09:27:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:27:59,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-29 09:27:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:27:59,895 INFO L225 Difference]: With dead ends: 113 [2020-10-29 09:27:59,896 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 09:27:59,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:27:59,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 09:27:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 09:27:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 09:27:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-29 09:27:59,941 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 33 [2020-10-29 09:27:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:27:59,941 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-29 09:27:59,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:27:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-29 09:27:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:27:59,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:27:59,943 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] [2020-10-29 09:27:59,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:27:59,944 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:27:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:27:59,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1331277171, now seen corresponding path program 1 times [2020-10-29 09:27:59,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:27:59,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91734635] [2020-10-29 09:27:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:27:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:27:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:04,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:04,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 09:28:04,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:28:04,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:28:04,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:04,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:28:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:28:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:05,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:05,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:28:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:05,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:05,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:05,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:05,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:05,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:28:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:05,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:28:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:05,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:28:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:05,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:28:05,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 09:28:05,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:05,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:28:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:28:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:05,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:05,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:05,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:28:05,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:05,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:28:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:28:05,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91734635] [2020-10-29 09:28:05,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:05,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:28:05,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998049467] [2020-10-29 09:28:05,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:28:05,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:05,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:28:05,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:28:05,277 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 9 states. [2020-10-29 09:28:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:05,633 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-29 09:28:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:28:05,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-29 09:28:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:05,636 INFO L225 Difference]: With dead ends: 60 [2020-10-29 09:28:05,636 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 09:28:05,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:28:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 09:28:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2020-10-29 09:28:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 09:28:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-29 09:28:05,666 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 34 [2020-10-29 09:28:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:05,667 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-29 09:28:05,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:28:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-29 09:28:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 09:28:05,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:05,668 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] [2020-10-29 09:28:05,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:28:05,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:05,669 INFO L82 PathProgramCache]: Analyzing trace with hash 60046777, now seen corresponding path program 1 times [2020-10-29 09:28:05,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:05,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085788268] [2020-10-29 09:28:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:10,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:10,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 09:28:10,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:28:10,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 09:28:10,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:10,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:28:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:28:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:28:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:10,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:10,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:10,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:10,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:10,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:10,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:10,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 09:28:10,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 09:28:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:10,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:28:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 09:28:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:10,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:10,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:28:10,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 09:28:10,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:10,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:28:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:28:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:28:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:10,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:11,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:11,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:11,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:28:11,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:11,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:28:11,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085788268] [2020-10-29 09:28:11,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:11,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:28:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726151868] [2020-10-29 09:28:11,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:28:11,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:11,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:28:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:28:11,026 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 10 states. [2020-10-29 09:28:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:11,362 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-29 09:28:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:28:11,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-29 09:28:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:11,364 INFO L225 Difference]: With dead ends: 65 [2020-10-29 09:28:11,364 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:28:11,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:28:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:28:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-29 09:28:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 09:28:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-29 09:28:11,373 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2020-10-29 09:28:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:11,374 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-29 09:28:11,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:28:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-29 09:28:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:28:11,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:11,375 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:28:11,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:28:11,376 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash -894013939, now seen corresponding path program 2 times [2020-10-29 09:28:11,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:11,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020214490] [2020-10-29 09:28:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:12,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:16,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:16,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:16,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:28:16,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:28:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5390 [2020-10-29 09:28:16,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:16,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:28:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:16,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:28:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:16,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:16,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:16,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:28:16,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:16,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:16,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:28:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:28:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 09:28:17,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:17,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:28:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:17,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:28:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:17,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:17,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:28:17,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:28:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-29 09:28:17,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:17,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:17,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:28:17,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:17,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:28:17,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:19,722 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 240 DAG size of output: 41 [2020-10-29 09:28:22,145 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 346 DAG size of output: 74 [2020-10-29 09:28:22,596 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 29 [2020-10-29 09:28:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:22,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 09:28:22,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:22,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:22,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:22,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:28:22,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020214490] [2020-10-29 09:28:22,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:22,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:28:22,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941120569] [2020-10-29 09:28:22,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:28:22,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:22,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:28:22,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:28:22,786 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 20 states. [2020-10-29 09:28:24,206 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 97 [2020-10-29 09:28:24,447 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 09:28:24,803 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-29 09:28:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:25,317 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2020-10-29 09:28:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:28:25,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2020-10-29 09:28:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:25,320 INFO L225 Difference]: With dead ends: 101 [2020-10-29 09:28:25,320 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 09:28:25,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:28:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 09:28:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-10-29 09:28:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 09:28:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-29 09:28:25,341 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 44 [2020-10-29 09:28:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:25,342 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-29 09:28:25,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:28:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-29 09:28:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:28:25,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:25,345 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:28:25,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:28:25,350 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:25,350 INFO L82 PathProgramCache]: Analyzing trace with hash -892405225, now seen corresponding path program 1 times [2020-10-29 09:28:25,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:25,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078813938] [2020-10-29 09:28:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:28,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:28,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:28:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-29 09:28:28,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:28,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 09:28:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 09:28:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:28:28,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:28,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:28:28,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 09:28:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:28,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:28:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:28:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:28:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:29,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:29,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:28:29,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:28:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:29,733 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-29 09:28:30,069 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-29 09:28:30,257 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-29 09:28:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:30,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:30,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:30,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 09:28:30,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:30,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:28:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:30,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:30,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:31,165 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 44 [2020-10-29 09:28:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:28:31,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078813938] [2020-10-29 09:28:31,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:31,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 09:28:31,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585093939] [2020-10-29 09:28:31,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 09:28:31,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 09:28:31,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:28:31,193 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 26 states. [2020-10-29 09:28:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:33,611 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-10-29 09:28:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 09:28:33,612 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2020-10-29 09:28:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:33,613 INFO L225 Difference]: With dead ends: 76 [2020-10-29 09:28:33,614 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 09:28:33,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 09:28:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 09:28:33,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2020-10-29 09:28:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 09:28:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-29 09:28:33,628 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 44 [2020-10-29 09:28:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:33,629 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-29 09:28:33,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 09:28:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-29 09:28:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 09:28:33,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:33,630 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:28:33,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:28:33,630 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:33,631 INFO L82 PathProgramCache]: Analyzing trace with hash -213955569, now seen corresponding path program 1 times [2020-10-29 09:28:33,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:33,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249989057] [2020-10-29 09:28:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:33,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:34,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:38,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:38,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:28:38,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:28:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:28:38,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:38,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:28:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:28:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:38,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:38,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:28:38,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:28:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:39,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:39,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:39,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:28:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:28:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-29 09:28:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:39,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:28:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:28:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:39,840 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-29 09:28:40,148 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-10-29 09:28:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:40,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:40,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:40,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 09:28:40,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:40,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:40,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:28:40,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249989057] [2020-10-29 09:28:40,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:40,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:28:40,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475628443] [2020-10-29 09:28:40,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:28:40,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:28:40,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:28:40,319 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 19 states. [2020-10-29 09:28:41,137 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-29 09:28:41,292 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 09:28:41,502 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 09:28:41,782 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 09:28:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:42,174 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-29 09:28:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:28:42,175 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 44 [2020-10-29 09:28:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:42,177 INFO L225 Difference]: With dead ends: 75 [2020-10-29 09:28:42,177 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 09:28:42,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2020-10-29 09:28:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 09:28:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2020-10-29 09:28:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:28:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-29 09:28:42,191 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 44 [2020-10-29 09:28:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:42,191 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-29 09:28:42,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:28:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-29 09:28:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:28:42,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:42,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:28:42,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:28:42,193 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash -101962693, now seen corresponding path program 1 times [2020-10-29 09:28:42,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:42,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196916698] [2020-10-29 09:28:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:44,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:28:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 09:28:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 09:28:47,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:28:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 09:28:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:47,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:47,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:47,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:47,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:28:47,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 09:28:47,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:28:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:28:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:47,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 09:28:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 09:28:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:47,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:28:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:28:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:28:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:28:47,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196916698] [2020-10-29 09:28:47,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:47,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:28:47,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194221419] [2020-10-29 09:28:47,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:28:47,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:47,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:28:47,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:28:47,796 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 17 states. [2020-10-29 09:28:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:48,867 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2020-10-29 09:28:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:28:48,868 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-29 09:28:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:48,870 INFO L225 Difference]: With dead ends: 68 [2020-10-29 09:28:48,870 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 09:28:48,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-10-29 09:28:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 09:28:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-29 09:28:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 09:28:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-29 09:28:48,880 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 45 [2020-10-29 09:28:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:48,881 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-29 09:28:48,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:28:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-29 09:28:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 09:28:48,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:48,882 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:28:48,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:28:48,883 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1218919048, now seen corresponding path program 3 times [2020-10-29 09:28:48,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:48,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524659542] [2020-10-29 09:28:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:53,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:53,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 09:28:53,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:28:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:53,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:54,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:28:54,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:28:54,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:28:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:54,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:28:54,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 09:28:54,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:54,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:28:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:28:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:28:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:28:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:28:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:28:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:54,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:28:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:28:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:28:54,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524659542] [2020-10-29 09:28:54,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:28:54,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:28:54,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038511388] [2020-10-29 09:28:54,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:28:54,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:28:54,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:28:54,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:28:54,153 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 8 states. [2020-10-29 09:28:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:28:54,427 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-29 09:28:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:28:54,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-29 09:28:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:28:54,429 INFO L225 Difference]: With dead ends: 63 [2020-10-29 09:28:54,431 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 09:28:54,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:28:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 09:28:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-29 09:28:54,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 09:28:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-29 09:28:54,445 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2020-10-29 09:28:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:28:54,448 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-29 09:28:54,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:28:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-29 09:28:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:28:54,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:28:54,449 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:28:54,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:28:54,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:28:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:28:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1391376936, now seen corresponding path program 1 times [2020-10-29 09:28:54,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:28:54,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326182625] [2020-10-29 09:28:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:28:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 09:28:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:28:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,800 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2020-10-29 09:28:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:28:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:28:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:28:59,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:28:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:28:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:28:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:29:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:29:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 09:29:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:29:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:29:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:29:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:29:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:29:00,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:29:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 09:29:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:29:26,595 WARN L193 SmtUtils]: Spent 19.73 s on a formula simplification. DAG size of input: 364 DAG size of output: 188