/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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:33:20,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:33:20,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:33:20,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:33:20,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:33:20,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:33:20,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:33:20,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:33:20,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:33:20,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:33:20,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:33:20,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:33:20,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:33:20,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:33:20,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:33:20,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:33:20,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:33:20,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:33:20,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:33:20,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:33:20,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:33:20,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:33:20,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:33:20,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:33:20,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:33:20,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:33:20,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:33:20,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:33:20,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:33:20,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:33:20,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:33:20,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:33:20,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:33:20,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:33:20,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:33:20,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:33:20,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:33:20,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:33:20,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:33:20,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:33:20,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:33:20,739 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 05:33:20,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:33:20,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:33:20,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:33:20,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:33:20,786 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:33:20,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:33:20,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:33:20,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:33:20,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:33:20,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:33:20,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:33:20,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:33:20,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:33:20,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:33:20,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:33:20,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:33:20,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:33:20,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:33:20,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:33:20,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:33:20,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:33:20,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:33:20,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:33:20,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:33:20,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:33:20,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:33:20,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:33:20,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:33:20,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:33:20,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:33:21,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:33:21,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:33:21,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:33:21,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:33:21,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:33:21,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label57.c [2020-10-29 05:33:21,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57f5bfe21/ab2d99a1fbe5467d8143a7ec62b8ed8e/FLAGaeb952c2c [2020-10-29 05:33:22,571 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:33:22,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label57.c [2020-10-29 05:33:22,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57f5bfe21/ab2d99a1fbe5467d8143a7ec62b8ed8e/FLAGaeb952c2c [2020-10-29 05:33:22,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57f5bfe21/ab2d99a1fbe5467d8143a7ec62b8ed8e [2020-10-29 05:33:22,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:33:22,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:33:22,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:33:22,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:33:22,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:33:22,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:33:22" (1/1) ... [2020-10-29 05:33:22,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31570f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:22, skipping insertion in model container [2020-10-29 05:33:22,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:33:22" (1/1) ... [2020-10-29 05:33:22,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:33:22,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:33:24,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:33:24,965 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:33:26,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:33:26,162 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:33:26,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26 WrapperNode [2020-10-29 05:33:26,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:33:26,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:33:26,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:33:26,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:33:26,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (1/1) ... [2020-10-29 05:33:26,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:33:26,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:33:26,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:33:26,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:33:26,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (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 05:33:26,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:33:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:33:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:33:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:33:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:33:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:33:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:33:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:33:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:33:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:33:26,928 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:33:26,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:33:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:33:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:33:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:33:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:33:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:33:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:33:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:33:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:33:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:33:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:33:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:33:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:33:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:33:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:33:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:33:36,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:33:36,726 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:33:36,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:36 BoogieIcfgContainer [2020-10-29 05:33:36,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:33:36,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:33:36,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:33:36,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:33:36,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:33:22" (1/3) ... [2020-10-29 05:33:36,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ab5812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:36, skipping insertion in model container [2020-10-29 05:33:36,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:26" (2/3) ... [2020-10-29 05:33:36,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ab5812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:36, skipping insertion in model container [2020-10-29 05:33:36,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:36" (3/3) ... [2020-10-29 05:33:36,741 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label57.c [2020-10-29 05:33:36,753 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:33:36,760 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:33:36,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:33:36,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:33:36,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:33:36,822 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:33:36,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:33:36,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:33:36,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:33:36,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:33:36,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:33:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:33:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1656 [2020-10-29 05:33:37,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:33:37,041 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] [2020-10-29 05:33:37,042 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:33:37,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:33:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1369444433, now seen corresponding path program 1 times [2020-10-29 05:33:37,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:33:37,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020595147] [2020-10-29 05:33:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:33:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1679 [2020-10-29 05:33:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-29 05:33:43,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:43,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:33:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:33:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1670 [2020-10-29 05:33:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 05:33:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:33:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:33:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:33:44,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:33:44,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:33:44,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:33:44,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:33:44,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:33:44,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:33:44,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:33:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:33:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:33:44,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:33:47,838 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 05:33:47,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020595147] [2020-10-29 05:33:47,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:33:47,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:33:47,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790288605] [2020-10-29 05:33:47,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:33:47,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:33:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:33:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:33:47,868 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-29 05:34:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:10,602 INFO L93 Difference]: Finished difference Result 6365 states and 11967 transitions. [2020-10-29 05:34:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:34:10,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1655 [2020-10-29 05:34:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:10,678 INFO L225 Difference]: With dead ends: 6365 [2020-10-29 05:34:10,678 INFO L226 Difference]: Without dead ends: 4075 [2020-10-29 05:34:10,694 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 05:34:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-29 05:34:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005. [2020-10-29 05:34:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-29 05:34:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions. [2020-10-29 05:34:10,947 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1655 [2020-10-29 05:34:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:10,954 INFO L481 AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions. [2020-10-29 05:34:10,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:34:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions. [2020-10-29 05:34:11,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2020-10-29 05:34:11,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:11,049 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] [2020-10-29 05:34:11,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:34:11,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:11,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:11,052 INFO L82 PathProgramCache]: Analyzing trace with hash 171508825, now seen corresponding path program 1 times [2020-10-29 05:34:11,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:11,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557113281] [2020-10-29 05:34:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:16,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1692 [2020-10-29 05:34:16,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 05:34:16,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:16,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:34:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 05:34:16,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1667 [2020-10-29 05:34:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:34:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:18,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:18,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:18,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:34:18,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:18,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:18,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:18,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 05:34:18,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:34:18,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:18,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 05:34:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:20,891 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 05:34:20,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557113281] [2020-10-29 05:34:20,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:34:20,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:34:20,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696854355] [2020-10-29 05:34:20,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:34:20,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:34:20,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:34:20,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:34:20,898 INFO L87 Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 6 states. [2020-10-29 05:34:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:34:50,631 INFO L93 Difference]: Finished difference Result 9921 states and 16681 transitions. [2020-10-29 05:34:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:34:50,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1666 [2020-10-29 05:34:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:34:50,669 INFO L225 Difference]: With dead ends: 9921 [2020-10-29 05:34:50,669 INFO L226 Difference]: Without dead ends: 5922 [2020-10-29 05:34:50,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:34:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2020-10-29 05:34:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5820. [2020-10-29 05:34:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5820 states. [2020-10-29 05:34:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 8989 transitions. [2020-10-29 05:34:50,852 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 8989 transitions. Word has length 1666 [2020-10-29 05:34:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:34:50,856 INFO L481 AbstractCegarLoop]: Abstraction has 5820 states and 8989 transitions. [2020-10-29 05:34:50,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:34:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 8989 transitions. [2020-10-29 05:34:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1668 [2020-10-29 05:34:50,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:34:50,925 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] [2020-10-29 05:34:50,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:34:50,926 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:34:50,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:34:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash 394257749, now seen corresponding path program 1 times [2020-10-29 05:34:50,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:34:50,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692550385] [2020-10-29 05:34:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:34:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:56,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:56,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1693 [2020-10-29 05:34:56,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:34:56,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 05:34:56,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:56,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 05:34:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 05:34:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-29 05:34:56,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:34:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:59,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:34:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:34:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:34:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:34:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:34:59,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:34:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:34:59,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:34:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:34:59,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:34:59,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:34:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:34:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:34:59,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 05:34:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:35:16,012 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 05:35:16,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692550385] [2020-10-29 05:35:16,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:35:16,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 05:35:16,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454329556] [2020-10-29 05:35:16,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 05:35:16,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:35:16,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 05:35:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-29 05:35:16,022 INFO L87 Difference]: Start difference. First operand 5820 states and 8989 transitions. Second operand 23 states. [2020-10-29 05:35:16,612 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 05:35:16,851 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-29 05:35:21,639 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:35:25,619 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-29 05:35:28,642 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 05:35:28,860 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-29 05:35:30,130 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-29 05:35:34,291 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-29 05:35:40,040 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:35:40,251 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:35:51,541 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:35:51,777 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:36:02,798 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:36:02,997 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:36:14,252 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:36:14,520 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-29 05:36:19,786 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:36:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:36:35,527 INFO L93 Difference]: Finished difference Result 12972 states and 20608 transitions. [2020-10-29 05:36:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 05:36:35,529 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1667 [2020-10-29 05:36:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:36:35,565 INFO L225 Difference]: With dead ends: 12972 [2020-10-29 05:36:35,566 INFO L226 Difference]: Without dead ends: 7158 [2020-10-29 05:36:35,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 05:36:35,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2020-10-29 05:36:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 7113. [2020-10-29 05:36:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7113 states. [2020-10-29 05:36:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 10308 transitions. [2020-10-29 05:36:35,768 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 10308 transitions. Word has length 1667 [2020-10-29 05:36:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:36:35,770 INFO L481 AbstractCegarLoop]: Abstraction has 7113 states and 10308 transitions. [2020-10-29 05:36:35,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 05:36:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 10308 transitions. [2020-10-29 05:36:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2020-10-29 05:36:35,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:36:35,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:35,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:36:35,817 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:36:35,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:36:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1051842570, now seen corresponding path program 1 times [2020-10-29 05:36:35,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:36:35,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710622416] [2020-10-29 05:36:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:36:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1707 [2020-10-29 05:36:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:36:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:36:40,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:40,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 05:36:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 05:36:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-29 05:36:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:45,569 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-29 05:36:45,740 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-29 05:36:45,922 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-29 05:36:46,145 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2020-10-29 05:36:46,369 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-10-29 05:36:46,556 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-29 05:36:46,724 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-10-29 05:36:46,991 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2020-10-29 05:36:47,139 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-29 05:36:47,337 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-29 05:36:47,528 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-10-29 05:36:47,672 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 31 [2020-10-29 05:36:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:36:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:36:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:36:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:36:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:36:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:36:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:36:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:36:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:36:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:36:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:36:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:36:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:36:48,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:36:48,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:36:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 05:36:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:36:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 05:36:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:37:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:37:10,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710622416] [2020-10-29 05:37:10,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:37:10,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 05:37:10,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567454561] [2020-10-29 05:37:10,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 05:37:10,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:37:10,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 05:37:10,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-10-29 05:37:10,050 INFO L87 Difference]: Start difference. First operand 7113 states and 10308 transitions. Second operand 24 states. [2020-10-29 05:37:10,530 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-29 05:37:10,966 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 102