/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:32:49,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:32:49,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:32:49,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:32:49,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:32:49,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:32:49,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:32:49,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:32:49,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:32:49,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:32:49,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:32:49,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:32:49,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:32:49,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:32:49,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:32:49,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:32:49,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:32:49,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:32:49,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:32:49,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:32:49,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:32:49,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:32:49,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:32:49,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:32:49,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:32:49,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:32:49,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:32:49,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:32:49,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:32:49,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:32:49,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:32:49,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:32:49,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:32:49,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:32:49,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:32:49,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:32:49,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:32:49,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:32:49,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:32:49,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:32:49,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:32:49,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:32:49,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:32:49,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:32:49,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:32:49,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:32:49,613 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:32:49,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:32:49,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:32:49,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:32:49,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:32:49,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:32:49,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:32:49,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:32:49,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:32:49,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:32:49,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:32:49,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:32:49,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:32:49,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:32:49,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:32:49,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:32:49,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:32:49,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:32:49,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:32:49,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:32:49,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:32:49,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:32:49,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:32:49,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:32:49,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:32:49,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:32:50,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:32:50,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:32:50,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:32:50,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:32:50,155 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:32:50,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label54.c [2020-10-29 05:32:50,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c0470642/80c7c70bed6542cc8e357a6afa6b99c1/FLAGe639c00fa [2020-10-29 05:32:51,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:32:51,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label54.c [2020-10-29 05:32:51,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c0470642/80c7c70bed6542cc8e357a6afa6b99c1/FLAGe639c00fa [2020-10-29 05:32:51,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c0470642/80c7c70bed6542cc8e357a6afa6b99c1 [2020-10-29 05:32:51,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:32:51,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:32:51,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:32:51,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:32:51,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:32:51,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:51" (1/1) ... [2020-10-29 05:32:51,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301ec25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:51, skipping insertion in model container [2020-10-29 05:32:51,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:32:51" (1/1) ... [2020-10-29 05:32:51,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:32:52,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:32:54,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:32:54,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:32:55,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:32:55,786 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:32:55,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55 WrapperNode [2020-10-29 05:32:55,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:32:55,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:32:55,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:32:55,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:32:55,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:55,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:55,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:55,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:56,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:56,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:56,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... [2020-10-29 05:32:56,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:32:56,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:32:56,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:32:56,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:32:56,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:32:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:32:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:32:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:32:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:32:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:32:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:32:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:32:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:32:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:32:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:32:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:32:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:32:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:32:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:32:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:32:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:32:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:32:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:32:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:32:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:32:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:32:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:32:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:32:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:32:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:32:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:32:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:33:06,668 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:33:06,669 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:33:06,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:06 BoogieIcfgContainer [2020-10-29 05:33:06,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:33:06,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:33:06,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:33:06,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:33:06,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:32:51" (1/3) ... [2020-10-29 05:33:06,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a04fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:06, skipping insertion in model container [2020-10-29 05:33:06,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:32:55" (2/3) ... [2020-10-29 05:33:06,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a04fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:06, skipping insertion in model container [2020-10-29 05:33:06,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:06" (3/3) ... [2020-10-29 05:33:06,689 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label54.c [2020-10-29 05:33:06,702 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:33:06,710 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:33:06,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:33:06,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:33:06,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:33:06,780 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:33:06,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:33:06,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:33:06,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:33:06,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:33:06,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:33:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:33:07,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1698 [2020-10-29 05:33:07,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:07,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:33:07,004 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash 283087033, now seen corresponding path program 1 times [2020-10-29 05:33:07,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:07,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733645754] [2020-10-29 05:33:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:13,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:13,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1721 [2020-10-29 05:33:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5268 [2020-10-29 05:33:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:13,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:33:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:33:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1712 [2020-10-29 05:33:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:33:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:15,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:15,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:15,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:33:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:15,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:33:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:33:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:33:18,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733645754] [2020-10-29 05:33:18,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:33:18,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:33:18,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597264568] [2020-10-29 05:33:18,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:33:18,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:18,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:33:18,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:33:18,128 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:33:41,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:33:41,659 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-29 05:33:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:33:41,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1697 [2020-10-29 05:33:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:33:41,715 INFO L225 Difference]: With dead ends: 6365 [2020-10-29 05:33:41,716 INFO L226 Difference]: Without dead ends: 4075 [2020-10-29 05:33:41,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:33:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-29 05:33:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-29 05:33:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-29 05:33:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-29 05:33:41,932 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1697 [2020-10-29 05:33:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:33:41,936 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-29 05:33:41,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:33:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-29 05:33:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1709 [2020-10-29 05:33:42,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:42,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:33:42,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:33:42,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash 320010945, now seen corresponding path program 1 times [2020-10-29 05:33:42,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:42,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623096636] [2020-10-29 05:33:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:47,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:47,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1734 [2020-10-29 05:33:47,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:33:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 05:33:47,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:47,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:33:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:33:47,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1709 [2020-10-29 05:33:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:33:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:49,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:33:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:49,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:33:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:33:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:33:49,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:33:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:49,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:33:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:33:49,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:49,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:33:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:33:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:33:52,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623096636] [2020-10-29 05:33:52,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:33:52,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:33:52,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515388314] [2020-10-29 05:33:52,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:33:52,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:52,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:33:52,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:33:52,421 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 5 states. [2020-10-29 05:34:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:19,209 INFO L93 Difference]: Finished difference Result 11599 states and 19034 transitions. [2020-10-29 05:34:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:34:19,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1708 [2020-10-29 05:34:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:19,257 INFO L225 Difference]: With dead ends: 11599 [2020-10-29 05:34:19,258 INFO L226 Difference]: Without dead ends: 7600 [2020-10-29 05:34:19,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:34:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7600 states. [2020-10-29 05:34:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 7557. [2020-10-29 05:34:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7557 states. [2020-10-29 05:34:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 10688 transitions. [2020-10-29 05:34:19,476 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 10688 transitions. Word has length 1708 [2020-10-29 05:34:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:19,480 INFO L481 AbstractCegarLoop]: Abstraction has 7557 states and 10688 transitions. [2020-10-29 05:34:19,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:34:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 10688 transitions. [2020-10-29 05:34:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-29 05:34:19,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:19,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:34:19,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:34:19,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:19,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:19,565 INFO L82 PathProgramCache]: Analyzing trace with hash 371908797, now seen corresponding path program 1 times [2020-10-29 05:34:19,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:19,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244132141] [2020-10-29 05:34:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:24,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:24,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-29 05:34:24,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:24,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-29 05:34:24,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:24,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:24,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:34:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:34:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:34:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:34:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:28,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:28,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:28,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:34:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:28,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:28,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:28,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:28,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:34:28,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:34:28,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:28,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:34:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:34:46,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244132141] [2020-10-29 05:34:46,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:34:46,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:34:46,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145274406] [2020-10-29 05:34:46,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:34:46,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:46,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:34:46,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:34:46,829 INFO L87 Difference]: Start difference. First operand 7557 states and 10688 transitions. Second operand 23 states. [2020-10-29 05:34:47,282 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-29 05:34:47,533 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-29 05:34:51,213 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-29 05:34:54,397 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 05:34:56,937 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:34:57,191 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-29 05:34:58,391 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-29 05:35:01,984 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-29 05:35:06,787 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:35:07,035 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:35:15,556 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:35:15,783 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:35:24,639 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:35:24,866 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:35:33,704 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:35:33,938 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:35:37,960 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:35:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:35:48,230 INFO L93 Difference]: Finished difference Result 16429 states and 23997 transitions. [2020-10-29 05:35:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 05:35:48,231 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1709 [2020-10-29 05:35:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:35:48,278 INFO L225 Difference]: With dead ends: 16429 [2020-10-29 05:35:48,279 INFO L226 Difference]: Without dead ends: 8878 [2020-10-29 05:35:48,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:35:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8878 states. [2020-10-29 05:35:48,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8878 to 8848. [2020-10-29 05:35:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2020-10-29 05:35:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 11999 transitions. [2020-10-29 05:35:48,517 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 11999 transitions. Word has length 1709 [2020-10-29 05:35:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:35:48,519 INFO L481 AbstractCegarLoop]: Abstraction has 8848 states and 11999 transitions. [2020-10-29 05:35:48,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:35:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 11999 transitions. [2020-10-29 05:35:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2020-10-29 05:35:48,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:35:48,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:35:48,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:35:48,599 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:35:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:35:48,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1458537048, now seen corresponding path program 1 times [2020-10-29 05:35:48,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:35:48,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299869107] [2020-10-29 05:35:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:35:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:35:49,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:35:54,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:35:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1745 [2020-10-29 05:35:54,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:35:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5234 [2020-10-29 05:35:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:35:54,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:35:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 05:35:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:35:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 979 [2020-10-29 05:35:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:58,098 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-29 05:35:58,229 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-29 05:35:58,361 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-29 05:35:58,490 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-29 05:35:58,625 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-29 05:35:58,812 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-29 05:35:58,998 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-29 05:35:59,184 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-29 05:35:59,374 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-29 05:35:59,601 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-29 05:35:59,923 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-29 05:36:00,107 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-29 05:36:00,280 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-29 05:36:00,462 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-29 05:36:00,667 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-29 05:36:00,893 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-10-29 05:36:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:36:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:01,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:01,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:36:01,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:36:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:01,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:36:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:01,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:01,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 05:36:01,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:36:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:36:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:36:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:36:17,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299869107] [2020-10-29 05:36:17,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:36:17,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 05:36:17,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699386583] [2020-10-29 05:36:17,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 05:36:17,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:36:17,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 05:36:17,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-10-29 05:36:17,463 INFO L87 Difference]: Start difference. First operand 8848 states and 11999 transitions. Second operand 21 states. [2020-10-29 05:36:18,109 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:36:18,364 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:36:27,771 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-29 05:36:28,085 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:36:29,502 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-29 05:36:32,786 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 108