/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block 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=0.2 --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 -i ../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:12:16,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:12:16,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:12:16,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:12:16,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:12:16,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:12:16,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:12:16,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:12:16,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:12:16,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:12:16,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:12:16,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:12:16,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:12:16,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:12:16,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:12:16,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:12:16,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:12:16,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:12:16,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:12:16,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:12:16,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:12:16,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:12:16,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:12:16,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:12:16,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:12:16,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:12:16,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:12:16,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:12:16,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:12:16,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:12:16,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:12:16,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:12:16,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:12:16,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:12:16,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:12:16,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:12:16,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:12:16,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:12:16,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:12:16,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:12:16,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:12:16,343 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 [2020-10-15 02:12:16,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:12:16,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:12:16,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:12:16,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:12:16,376 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:12:16,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:12:16,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:12:16,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:12:16,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:12:16,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:12:16,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:12:16,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:12:16,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:12:16,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:12:16,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:12:16,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:12:16,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:12:16,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:12:16,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:12:16,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:12:16,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:12:16,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:16,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:12:16,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:12:16,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:12:16,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:12:16,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:12:16,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:12:16,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:12:16,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:12:16,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:12:16,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:12:16,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:12:16,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:12:16,700 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:12:16,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-15 02:12:16,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9a5a3e4d/34a8cf8f4cbe4830a26c0507564ee7d2/FLAGdef7feeca [2020-10-15 02:12:17,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:12:17,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/system-with-recursion.i [2020-10-15 02:12:17,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9a5a3e4d/34a8cf8f4cbe4830a26c0507564ee7d2/FLAGdef7feeca [2020-10-15 02:12:17,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9a5a3e4d/34a8cf8f4cbe4830a26c0507564ee7d2 [2020-10-15 02:12:17,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:12:17,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:12:17,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:17,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:12:17,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:12:17,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:17" (1/1) ... [2020-10-15 02:12:17,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50689279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:17, skipping insertion in model container [2020-10-15 02:12:17,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:17" (1/1) ... [2020-10-15 02:12:17,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:12:17,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:12:18,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:18,356 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:12:18,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:18,573 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:12:18,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18 WrapperNode [2020-10-15 02:12:18,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:18,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:12:18,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:12:18,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:12:18,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (1/1) ... [2020-10-15 02:12:18,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:12:18,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:12:18,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:12:18,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:12:18,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (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 [2020-10-15 02:12:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:12:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:12:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-15 02:12:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-15 02:12:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2020-10-15 02:12:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-15 02:12:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2020-10-15 02:12:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure system_cleanup [2020-10-15 02:12:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2020-10-15 02:12:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2020-10-15 02:12:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2020-10-15 02:12:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure hello_message [2020-10-15 02:12:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure open_message [2020-10-15 02:12:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure close_message [2020-10-15 02:12:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2020-10-15 02:12:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2020-10-15 02:12:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2020-10-15 02:12:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure user_initialize [2020-10-15 02:12:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:12:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-10-15 02:12:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 02:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-15 02:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-15 02:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-15 02:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-15 02:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-15 02:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-15 02:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-15 02:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-15 02:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-15 02:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-15 02:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-15 02:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-15 02:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-15 02:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-15 02:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-15 02:12:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-15 02:12:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-15 02:12:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-15 02:12:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-15 02:12:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-15 02:12:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-15 02:12:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-15 02:12:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-15 02:12:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-15 02:12:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-15 02:12:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-15 02:12:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-15 02:12:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-15 02:12:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-15 02:12:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-15 02:12:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-15 02:12:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-15 02:12:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-15 02:12:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-15 02:12:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-15 02:12:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-15 02:12:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-15 02:12:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-15 02:12:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-15 02:12:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-15 02:12:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-15 02:12:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-15 02:12:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-15 02:12:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-15 02:12:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-15 02:12:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-15 02:12:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-15 02:12:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-15 02:12:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-15 02:12:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-15 02:12:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-15 02:12:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-15 02:12:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 02:12:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 02:12:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-15 02:12:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 02:12:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-15 02:12:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-15 02:12:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-15 02:12:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-15 02:12:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-15 02:12:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:12:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-15 02:12:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-15 02:12:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-15 02:12:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-15 02:12:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-15 02:12:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-15 02:12:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-15 02:12:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-15 02:12:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-15 02:12:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-15 02:12:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-15 02:12:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-15 02:12:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-15 02:12:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-15 02:12:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-15 02:12:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-15 02:12:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-15 02:12:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-15 02:12:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-15 02:12:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-15 02:12:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-15 02:12:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-15 02:12:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-15 02:12:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-15 02:12:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-15 02:12:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-15 02:12:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-15 02:12:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-15 02:12:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-15 02:12:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-15 02:12:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-15 02:12:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-15 02:12:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-15 02:12:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-15 02:12:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-15 02:12:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-15 02:12:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-15 02:12:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-15 02:12:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-15 02:12:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-15 02:12:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-15 02:12:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-15 02:12:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-15 02:12:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-15 02:12:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2020-10-15 02:12:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2020-10-15 02:12:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-10-15 02:12:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-10-15 02:12:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2020-10-15 02:12:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-15 02:12:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-15 02:12:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-15 02:12:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2020-10-15 02:12:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-15 02:12:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-15 02:12:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2020-10-15 02:12:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2020-10-15 02:12:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2020-10-15 02:12:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2020-10-15 02:12:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2020-10-15 02:12:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2020-10-15 02:12:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-15 02:12:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-15 02:12:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-10-15 02:12:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2020-10-15 02:12:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2020-10-15 02:12:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-15 02:12:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2020-10-15 02:12:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2020-10-15 02:12:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2020-10-15 02:12:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-15 02:12:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2020-10-15 02:12:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2020-10-15 02:12:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2020-10-15 02:12:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2020-10-15 02:12:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure __bzero [2020-10-15 02:12:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2020-10-15 02:12:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2020-10-15 02:12:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2020-10-15 02:12:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure index [2020-10-15 02:12:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2020-10-15 02:12:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2020-10-15 02:12:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2020-10-15 02:12:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2020-10-15 02:12:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2020-10-15 02:12:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2020-10-15 02:12:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2020-10-15 02:12:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:12:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:12:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 02:12:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:12:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 02:12:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:12:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-15 02:12:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2020-10-15 02:12:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure system_cleanup [2020-10-15 02:12:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-10-15 02:12:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2020-10-15 02:12:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2020-10-15 02:12:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2020-10-15 02:12:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure hello_message [2020-10-15 02:12:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure open_message [2020-10-15 02:12:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure close_message [2020-10-15 02:12:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2020-10-15 02:12:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 02:12:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 02:12:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2020-10-15 02:12:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure user_initialize [2020-10-15 02:12:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 02:12:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:12:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:12:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:12:19,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:12:19,846 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:12:19,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:19 BoogieIcfgContainer [2020-10-15 02:12:19,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:12:19,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:12:19,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:12:19,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:12:19,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:17" (1/3) ... [2020-10-15 02:12:19,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb4746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:19, skipping insertion in model container [2020-10-15 02:12:19,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:18" (2/3) ... [2020-10-15 02:12:19,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb4746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:19, skipping insertion in model container [2020-10-15 02:12:19,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:19" (3/3) ... [2020-10-15 02:12:19,859 INFO L109 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2020-10-15 02:12:19,870 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:12:19,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:12:19,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:12:19,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:12:19,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:12:19,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:12:19,920 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:12:19,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:12:19,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:12:19,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:12:19,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:12:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-15 02:12:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 02:12:19,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:19,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:19,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -502491080, now seen corresponding path program 1 times [2020-10-15 02:12:19,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:19,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744251755] [2020-10-15 02:12:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:20,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:22,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 02:12:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:12:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2747 [2020-10-15 02:12:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:22,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 02:12:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:12:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:23,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:12:23,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:23,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:23,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:12:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:12:23,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:23,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 02:12:23,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 02:12:23,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:12:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:23,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:23,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:12:23,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744251755] [2020-10-15 02:12:23,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:12:23,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 02:12:23,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067329317] [2020-10-15 02:12:23,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:12:23,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:23,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:12:23,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:12:23,269 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 8 states. [2020-10-15 02:12:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:25,266 INFO L93 Difference]: Finished difference Result 389 states and 541 transitions. [2020-10-15 02:12:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:12:25,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-15 02:12:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:25,283 INFO L225 Difference]: With dead ends: 389 [2020-10-15 02:12:25,284 INFO L226 Difference]: Without dead ends: 219 [2020-10-15 02:12:25,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:12:25,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-15 02:12:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 164. [2020-10-15 02:12:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-15 02:12:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 216 transitions. [2020-10-15 02:12:25,366 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 216 transitions. Word has length 27 [2020-10-15 02:12:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:25,367 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 216 transitions. [2020-10-15 02:12:25,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:12:25,367 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 216 transitions. [2020-10-15 02:12:25,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 02:12:25,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:25,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:25,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:12:25,371 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:25,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:25,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1927126966, now seen corresponding path program 1 times [2020-10-15 02:12:25,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:25,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638661577] [2020-10-15 02:12:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:30,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:30,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 02:12:30,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:12:30,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:30,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:12:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 02:12:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:12:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:30,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:30,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:30,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:30,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:12:30,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:30,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:12:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:30,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:12:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 02:12:30,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:30,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:12:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:30,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:30,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:30,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:30,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:12:30,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 02:12:30,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:30,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:12:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 02:12:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:12:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:12:30,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638661577] [2020-10-15 02:12:30,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:30,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:12:30,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854289610] [2020-10-15 02:12:30,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:12:30,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:30,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:12:30,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:12:30,834 INFO L87 Difference]: Start difference. First operand 164 states and 216 transitions. Second operand 13 states. [2020-10-15 02:12:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:34,846 INFO L93 Difference]: Finished difference Result 514 states and 765 transitions. [2020-10-15 02:12:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 02:12:34,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-15 02:12:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:34,865 INFO L225 Difference]: With dead ends: 514 [2020-10-15 02:12:34,865 INFO L226 Difference]: Without dead ends: 378 [2020-10-15 02:12:34,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2020-10-15 02:12:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-15 02:12:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 303. [2020-10-15 02:12:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-15 02:12:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 423 transitions. [2020-10-15 02:12:34,971 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 423 transitions. Word has length 43 [2020-10-15 02:12:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:34,971 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 423 transitions. [2020-10-15 02:12:34,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:12:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 423 transitions. [2020-10-15 02:12:34,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 02:12:34,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:34,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:34,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:12:34,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash 834683565, now seen corresponding path program 1 times [2020-10-15 02:12:34,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:34,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215485787] [2020-10-15 02:12:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:12:37,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:12:37,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2568 [2020-10-15 02:12:37,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:12:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 02:12:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:12:37,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:37,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:12:37,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:12:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:12:37,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:12:37,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:12:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:37,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:37,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:37,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 02:12:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:12:37,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215485787] [2020-10-15 02:12:37,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:12:37,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 02:12:37,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813273031] [2020-10-15 02:12:37,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:12:37,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:37,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:12:37,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:12:37,958 INFO L87 Difference]: Start difference. First operand 303 states and 423 transitions. Second operand 12 states. [2020-10-15 02:12:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:41,688 INFO L93 Difference]: Finished difference Result 902 states and 1436 transitions. [2020-10-15 02:12:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 02:12:41,689 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-15 02:12:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:41,697 INFO L225 Difference]: With dead ends: 902 [2020-10-15 02:12:41,697 INFO L226 Difference]: Without dead ends: 627 [2020-10-15 02:12:41,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:12:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-15 02:12:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 541. [2020-10-15 02:12:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-15 02:12:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 793 transitions. [2020-10-15 02:12:41,804 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 793 transitions. Word has length 44 [2020-10-15 02:12:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:41,805 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 793 transitions. [2020-10-15 02:12:41,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:12:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 793 transitions. [2020-10-15 02:12:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 02:12:41,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:41,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:41,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:12:41,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1627663034, now seen corresponding path program 1 times [2020-10-15 02:12:41,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:41,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912247013] [2020-10-15 02:12:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:46,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:12:46,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:12:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:12:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:46,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:12:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 02:12:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:12:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:47,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:12:47,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:12:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:12:47,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:12:47,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:12:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:47,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:47,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:12:47,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:12:47,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:12:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 02:12:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:47,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 02:12:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:47,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:12:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:47,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-15 02:12:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:12:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:47,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:12:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 02:12:47,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912247013] [2020-10-15 02:12:47,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:47,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:12:47,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289682176] [2020-10-15 02:12:47,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:12:47,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:12:47,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:47,298 INFO L87 Difference]: Start difference. First operand 541 states and 793 transitions. Second operand 11 states. [2020-10-15 02:12:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:50,012 INFO L93 Difference]: Finished difference Result 1575 states and 2707 transitions. [2020-10-15 02:12:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:12:50,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-15 02:12:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:50,025 INFO L225 Difference]: With dead ends: 1575 [2020-10-15 02:12:50,025 INFO L226 Difference]: Without dead ends: 1061 [2020-10-15 02:12:50,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:12:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-15 02:12:50,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 904. [2020-10-15 02:12:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-15 02:12:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1405 transitions. [2020-10-15 02:12:50,125 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1405 transitions. Word has length 65 [2020-10-15 02:12:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:50,125 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1405 transitions. [2020-10-15 02:12:50,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:12:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1405 transitions. [2020-10-15 02:12:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 02:12:50,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:50,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:50,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:12:50,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:50,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash 423320964, now seen corresponding path program 1 times [2020-10-15 02:12:50,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:50,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139742399] [2020-10-15 02:12:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:50,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:12:55,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:12:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 02:12:55,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:12:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:12:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 02:12:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:55,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:55,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:12:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:12:55,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-15 02:12:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:12:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:12:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:55,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:12:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:55,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:55,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:12:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:55,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:12:55,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:55,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 02:12:55,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:12:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 02:12:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 02:12:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:12:55,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:12:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-15 02:12:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:55,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:55,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:55,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:12:55,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:55,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:12:55,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:55,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 02:12:55,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139742399] [2020-10-15 02:12:55,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:12:55,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 02:12:55,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136486924] [2020-10-15 02:12:55,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:12:55,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:55,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:12:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:12:55,663 INFO L87 Difference]: Start difference. First operand 904 states and 1405 transitions. Second operand 12 states. [2020-10-15 02:12:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:59,219 INFO L93 Difference]: Finished difference Result 2651 states and 4316 transitions. [2020-10-15 02:12:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:12:59,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-15 02:12:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:59,243 INFO L225 Difference]: With dead ends: 2651 [2020-10-15 02:12:59,244 INFO L226 Difference]: Without dead ends: 1775 [2020-10-15 02:12:59,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-10-15 02:12:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2020-10-15 02:12:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1616. [2020-10-15 02:12:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-10-15 02:12:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2700 transitions. [2020-10-15 02:12:59,486 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2700 transitions. Word has length 65 [2020-10-15 02:12:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:59,486 INFO L479 AbstractCegarLoop]: Abstraction has 1616 states and 2700 transitions. [2020-10-15 02:12:59,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:12:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2700 transitions. [2020-10-15 02:12:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 02:12:59,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:59,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:59,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:12:59,491 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:59,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1168999575, now seen corresponding path program 1 times [2020-10-15 02:12:59,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:59,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698191152] [2020-10-15 02:12:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:13:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 02:13:04,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 02:13:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:13:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:04,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:04,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:04,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:04,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:04,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:04,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:13:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:13:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:13:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:05,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:05,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:13:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:05,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:05,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:13:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:05,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:05,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 02:13:05,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:05,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:13:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:05,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:05,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:05,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:13:05,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:05,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:05,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:05,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 02:13:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:05,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 02:13:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 02:13:05,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698191152] [2020-10-15 02:13:05,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:05,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:13:05,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90815123] [2020-10-15 02:13:05,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:13:05,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:05,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:13:05,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:13:05,475 INFO L87 Difference]: Start difference. First operand 1616 states and 2700 transitions. Second operand 20 states. [2020-10-15 02:13:06,401 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-15 02:13:06,641 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-15 02:13:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:12,723 INFO L93 Difference]: Finished difference Result 3754 states and 6482 transitions. [2020-10-15 02:13:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 02:13:12,724 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-15 02:13:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:12,746 INFO L225 Difference]: With dead ends: 3754 [2020-10-15 02:13:12,747 INFO L226 Difference]: Without dead ends: 1918 [2020-10-15 02:13:12,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=333, Invalid=1647, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 02:13:12,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-10-15 02:13:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1749. [2020-10-15 02:13:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2020-10-15 02:13:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2879 transitions. [2020-10-15 02:13:12,930 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2879 transitions. Word has length 66 [2020-10-15 02:13:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:12,931 INFO L479 AbstractCegarLoop]: Abstraction has 1749 states and 2879 transitions. [2020-10-15 02:13:12,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:13:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2879 transitions. [2020-10-15 02:13:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 02:13:12,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:12,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:12,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:13:12,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:12,935 INFO L82 PathProgramCache]: Analyzing trace with hash 398071930, now seen corresponding path program 1 times [2020-10-15 02:13:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:12,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087190512] [2020-10-15 02:13:12,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:17,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 02:13:17,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:17,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 02:13:17,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:18,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:18,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:18,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:18,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:13:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:13:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:13:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:18,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:18,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:18,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:18,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:13:18,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:18,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:18,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:13:18,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:18,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:18,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:18,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 02:13:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:18,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:18,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:13:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:18,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:18,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:13:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:18,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:18,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:18,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:18,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 02:13:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:18,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 02:13:18,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087190512] [2020-10-15 02:13:18,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:18,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:13:18,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967608028] [2020-10-15 02:13:18,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:13:18,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:13:18,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:13:18,728 INFO L87 Difference]: Start difference. First operand 1749 states and 2879 transitions. Second operand 21 states. [2020-10-15 02:13:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:24,721 INFO L93 Difference]: Finished difference Result 3537 states and 5851 transitions. [2020-10-15 02:13:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 02:13:24,722 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2020-10-15 02:13:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:24,749 INFO L225 Difference]: With dead ends: 3537 [2020-10-15 02:13:24,750 INFO L226 Difference]: Without dead ends: 1918 [2020-10-15 02:13:24,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=332, Invalid=1648, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 02:13:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-10-15 02:13:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1754. [2020-10-15 02:13:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1754 states. [2020-10-15 02:13:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2888 transitions. [2020-10-15 02:13:24,912 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2888 transitions. Word has length 67 [2020-10-15 02:13:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:24,914 INFO L479 AbstractCegarLoop]: Abstraction has 1754 states and 2888 transitions. [2020-10-15 02:13:24,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:13:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2888 transitions. [2020-10-15 02:13:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 02:13:24,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:24,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:24,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:13:24,917 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1827112315, now seen corresponding path program 1 times [2020-10-15 02:13:24,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:24,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888858782] [2020-10-15 02:13:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:30,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:30,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 02:13:30,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:13:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-15 02:13:30,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:30,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-15 02:13:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:13:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 02:13:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:31,395 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2020-10-15 02:13:32,088 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 52 [2020-10-15 02:13:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:32,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:13:32,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 02:13:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 02:13:32,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 02:13:32,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:32,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:13:32,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 02:13:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:32,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:13:32,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:13:32,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:32,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 02:13:32,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:13:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:13:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:32,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 02:13:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-15 02:13:33,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:13:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 02:13:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:13:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0