/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=DEEPEST --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/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:41:52,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:41:52,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:41:52,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:41:52,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:41:52,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:41:52,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:41:52,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:41:52,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:41:52,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:41:52,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:41:52,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:41:52,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:41:52,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:41:52,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:41:52,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:41:52,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:41:52,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:41:52,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:41:52,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:41:52,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:41:52,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:41:52,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:41:52,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:41:52,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:41:52,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:41:52,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:41:52,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:41:52,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:41:52,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:41:52,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:41:52,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:41:52,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:41:52,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:41:52,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:41:52,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:41:52,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:41:52,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:41:52,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:41:52,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:41:52,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:41:52,943 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 [2020-10-27 17:41:53,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:41:53,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:41:53,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:41:53,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:41:53,007 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:41:53,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:41:53,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:41:53,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:41:53,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:41:53,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:41:53,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:41:53,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:41:53,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:41:53,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:41:53,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:41:53,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:41:53,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:41:53,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:41:53,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:41:53,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:41:53,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:41:53,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:41:53,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:41:53,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:41:53,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:41:53,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:41:53,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:41:53,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:41:53,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:41:53,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:41:53,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:41:53,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:41:53,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:41:53,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:41:53,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:41:53,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-27 17:41:53,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fed21c739/55c3634d4b4e49afbff864c18a081c12/FLAGd6e9fcddd [2020-10-27 17:41:54,778 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:41:54,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2020-10-27 17:41:54,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fed21c739/55c3634d4b4e49afbff864c18a081c12/FLAGd6e9fcddd [2020-10-27 17:41:55,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fed21c739/55c3634d4b4e49afbff864c18a081c12 [2020-10-27 17:41:55,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:41:55,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:41:55,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:41:55,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:41:55,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:41:55,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:41:55" (1/1) ... [2020-10-27 17:41:55,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63136659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:55, skipping insertion in model container [2020-10-27 17:41:55,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:41:55" (1/1) ... [2020-10-27 17:41:55,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:41:55,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:41:56,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:41:56,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:41:57,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:41:57,409 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:41:57,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57 WrapperNode [2020-10-27 17:41:57,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:41:57,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:41:57,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:41:57,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:41:57,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (1/1) ... [2020-10-27 17:41:57,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:41:57,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:41:57,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:41:57,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:41:57,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (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 [2020-10-27 17:41:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:41:57,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:41:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:41:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:41:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:41:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:41:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:41:57,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:41:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:41:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:41:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:41:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:41:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:41:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:41:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:41:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:41:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:41:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:41:57,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:42:03,712 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:42:03,713 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:42:03,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:03 BoogieIcfgContainer [2020-10-27 17:42:03,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:42:03,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:42:03,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:42:03,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:42:03,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:41:55" (1/3) ... [2020-10-27 17:42:03,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719e5e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:03, skipping insertion in model container [2020-10-27 17:42:03,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:41:57" (2/3) ... [2020-10-27 17:42:03,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719e5e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:03, skipping insertion in model container [2020-10-27 17:42:03,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:03" (3/3) ... [2020-10-27 17:42:03,728 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2020-10-27 17:42:03,744 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:42:03,751 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:42:03,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:42:03,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:42:03,809 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:42:03,809 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:42:03,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:42:03,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:42:03,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:42:03,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:42:03,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:42:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:42:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 17:42:03,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:03,867 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] [2020-10-27 17:42:03,868 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:03,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1536496260, now seen corresponding path program 1 times [2020-10-27 17:42:03,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:03,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838622214] [2020-10-27 17:42:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:04,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:42:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-27 17:42:04,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:42:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:42:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 17:42:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:42:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:05,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:05,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:05,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:05,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:42:05,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:05,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:05,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:42:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:05,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838622214] [2020-10-27 17:42:05,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:42:05,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:42:05,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72022032] [2020-10-27 17:42:05,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:42:05,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:05,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:42:05,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:42:05,292 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:42:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:17,554 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:42:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:17,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-27 17:42:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:17,594 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:42:17,594 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:42:17,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:42:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:42:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:42:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-27 17:42:17,838 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 72 [2020-10-27 17:42:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:17,840 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-27 17:42:17,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:42:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-27 17:42:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 17:42:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:17,849 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:42:17,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:42:17,850 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash 777051258, now seen corresponding path program 1 times [2020-10-27 17:42:17,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:17,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245114115] [2020-10-27 17:42:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:19,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 17:42:19,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:42:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-10-27 17:42:19,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:42:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 17:42:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:42:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:20,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:20,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:42:20,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 17:42:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:20,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:20,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:42:20,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 17:42:20,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:42:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:20,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245114115] [2020-10-27 17:42:20,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:20,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:42:20,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082040812] [2020-10-27 17:42:20,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:42:20,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:20,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:42:20,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:20,352 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-27 17:42:20,846 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-27 17:42:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:28,928 INFO L93 Difference]: Finished difference Result 3164 states and 5115 transitions. [2020-10-27 17:42:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:28,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 17:42:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:28,940 INFO L225 Difference]: With dead ends: 3164 [2020-10-27 17:42:28,940 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:42:28,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:28,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:42:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:42:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:42:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2334 transitions. [2020-10-27 17:42:29,013 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2334 transitions. Word has length 147 [2020-10-27 17:42:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:29,014 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2334 transitions. [2020-10-27 17:42:29,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:42:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2334 transitions. [2020-10-27 17:42:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 17:42:29,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:29,018 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:42:29,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:42:29,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash 603146404, now seen corresponding path program 1 times [2020-10-27 17:42:29,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:29,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189530852] [2020-10-27 17:42:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:30,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:30,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 17:42:30,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:42:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-27 17:42:30,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 17:42:30,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:42:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:30,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:42:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:30,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 17:42:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 17:42:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 17:42:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:30,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189530852] [2020-10-27 17:42:30,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:30,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:42:30,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522191261] [2020-10-27 17:42:30,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:42:30,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:42:30,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:30,671 INFO L87 Difference]: Start difference. First operand 1554 states and 2334 transitions. Second operand 5 states. [2020-10-27 17:42:31,164 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:42:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:43,330 INFO L93 Difference]: Finished difference Result 4674 states and 7093 transitions. [2020-10-27 17:42:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:43,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-27 17:42:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:43,352 INFO L225 Difference]: With dead ends: 4674 [2020-10-27 17:42:43,352 INFO L226 Difference]: Without dead ends: 3126 [2020-10-27 17:42:43,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-27 17:42:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3110. [2020-10-27 17:42:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-27 17:42:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4304 transitions. [2020-10-27 17:42:43,452 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4304 transitions. Word has length 148 [2020-10-27 17:42:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:43,453 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4304 transitions. [2020-10-27 17:42:43,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:42:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4304 transitions. [2020-10-27 17:42:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 17:42:43,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:43,457 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:42:43,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:42:43,457 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:43,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1926247070, now seen corresponding path program 1 times [2020-10-27 17:42:43,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:43,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770838505] [2020-10-27 17:42:43,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:44,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:44,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 17:42:44,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:42:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-27 17:42:44,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 17:42:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:42:44,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:44,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:44,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:44,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:44,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:42:44,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:42:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:42:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 17:42:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:45,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770838505] [2020-10-27 17:42:45,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:45,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:42:45,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390138182] [2020-10-27 17:42:45,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:42:45,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:45,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:42:45,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:42:45,242 INFO L87 Difference]: Start difference. First operand 3110 states and 4304 transitions. Second operand 6 states. [2020-10-27 17:43:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:01,511 INFO L93 Difference]: Finished difference Result 7786 states and 11151 transitions. [2020-10-27 17:43:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:43:01,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-10-27 17:43:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:01,542 INFO L225 Difference]: With dead ends: 7786 [2020-10-27 17:43:01,542 INFO L226 Difference]: Without dead ends: 4682 [2020-10-27 17:43:01,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:43:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2020-10-27 17:43:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4674. [2020-10-27 17:43:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-10-27 17:43:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6274 transitions. [2020-10-27 17:43:01,692 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6274 transitions. Word has length 161 [2020-10-27 17:43:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:01,693 INFO L481 AbstractCegarLoop]: Abstraction has 4674 states and 6274 transitions. [2020-10-27 17:43:01,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:43:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6274 transitions. [2020-10-27 17:43:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 17:43:01,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:01,698 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:43:01,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:43:01,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:01,699 INFO L82 PathProgramCache]: Analyzing trace with hash 925575362, now seen corresponding path program 1 times [2020-10-27 17:43:01,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:01,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636164184] [2020-10-27 17:43:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:02,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:02,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 17:43:02,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:43:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-27 17:43:02,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 17:43:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:43:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:02,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:02,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:43:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:02,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:43:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 17:43:03,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:43:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636164184] [2020-10-27 17:43:03,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:03,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:03,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945120689] [2020-10-27 17:43:03,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:03,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:03,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:03,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:03,223 INFO L87 Difference]: Start difference. First operand 4674 states and 6274 transitions. Second operand 5 states. [2020-10-27 17:43:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:15,781 INFO L93 Difference]: Finished difference Result 14009 states and 19082 transitions. [2020-10-27 17:43:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:15,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-27 17:43:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:15,824 INFO L225 Difference]: With dead ends: 14009 [2020-10-27 17:43:15,825 INFO L226 Difference]: Without dead ends: 9341 [2020-10-27 17:43:15,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2020-10-27 17:43:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 9333. [2020-10-27 17:43:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9333 states. [2020-10-27 17:43:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 11570 transitions. [2020-10-27 17:43:16,069 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 11570 transitions. Word has length 175 [2020-10-27 17:43:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:16,070 INFO L481 AbstractCegarLoop]: Abstraction has 9333 states and 11570 transitions. [2020-10-27 17:43:16,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 11570 transitions. [2020-10-27 17:43:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-27 17:43:16,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:16,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:43:16,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:43:16,077 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:16,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1146579810, now seen corresponding path program 1 times [2020-10-27 17:43:16,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:16,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076702517] [2020-10-27 17:43:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:17,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-27 17:43:19,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:43:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3576 [2020-10-27 17:43:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-27 17:43:19,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:43:19,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:19,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:19,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:19,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:19,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:19,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 17:43:19,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:43:19,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 17:43:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 17:43:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 17:43:19,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:43:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 17:43:20,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076702517] [2020-10-27 17:43:20,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:20,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:20,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427810923] [2020-10-27 17:43:20,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:20,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:20,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:20,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:20,051 INFO L87 Difference]: Start difference. First operand 9333 states and 11570 transitions. Second operand 5 states. [2020-10-27 17:43:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:33,305 INFO L93 Difference]: Finished difference Result 27983 states and 35563 transitions. [2020-10-27 17:43:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:33,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-27 17:43:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:33,387 INFO L225 Difference]: With dead ends: 27983 [2020-10-27 17:43:33,387 INFO L226 Difference]: Without dead ends: 18656 [2020-10-27 17:43:33,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18656 states. [2020-10-27 17:43:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18656 to 18639. [2020-10-27 17:43:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18639 states. [2020-10-27 17:43:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18639 states to 18639 states and 23051 transitions. [2020-10-27 17:43:33,876 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 23051 transitions. Word has length 221 [2020-10-27 17:43:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:33,876 INFO L481 AbstractCegarLoop]: Abstraction has 18639 states and 23051 transitions. [2020-10-27 17:43:33,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 23051 transitions. [2020-10-27 17:43:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 17:43:33,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:33,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:43:33,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:43:33,888 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:33,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1329147664, now seen corresponding path program 1 times [2020-10-27 17:43:33,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:33,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652078950] [2020-10-27 17:43:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:33,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:38,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 17:43:38,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:43:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 17:43:38,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-27 17:43:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 17:43:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:39,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:39,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:39,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:39,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:43:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:39,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:43:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 17:43:39,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 17:43:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:39,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:39,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:43:39,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 17:43:39,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:43:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 17:43:39,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652078950] [2020-10-27 17:43:39,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:39,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:39,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941240349] [2020-10-27 17:43:39,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:39,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:39,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:39,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:39,520 INFO L87 Difference]: Start difference. First operand 18639 states and 23051 transitions. Second operand 5 states. [2020-10-27 17:43:40,892 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 17:43:47,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:47,942 INFO L93 Difference]: Finished difference Result 37301 states and 46225 transitions. [2020-10-27 17:43:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:47,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-27 17:43:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:48,015 INFO L225 Difference]: With dead ends: 37301 [2020-10-27 17:43:48,016 INFO L226 Difference]: Without dead ends: 18656 [2020-10-27 17:43:48,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18656 states. [2020-10-27 17:43:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18656 to 18639. [2020-10-27 17:43:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18639 states. [2020-10-27 17:43:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18639 states to 18639 states and 23047 transitions. [2020-10-27 17:43:48,482 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 23047 transitions. Word has length 238 [2020-10-27 17:43:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:48,483 INFO L481 AbstractCegarLoop]: Abstraction has 18639 states and 23047 transitions. [2020-10-27 17:43:48,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 23047 transitions. [2020-10-27 17:43:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 17:43:48,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:48,568 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:43:48,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:43:48,568 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:48,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1593808680, now seen corresponding path program 1 times [2020-10-27 17:43:48,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:48,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38274677] [2020-10-27 17:43:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:50,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:50,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-27 17:43:50,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1675 [2020-10-27 17:43:50,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:50,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:50,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 17:43:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:43:50,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:50,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:50,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:43:50,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:50,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:50,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:50,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 17:43:50,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 17:43:50,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:43:50,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:50,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38274677] [2020-10-27 17:43:50,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:50,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:50,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269184897] [2020-10-27 17:43:50,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:50,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:50,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:50,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:50,918 INFO L87 Difference]: Start difference. First operand 18639 states and 23047 transitions. Second operand 5 states. [2020-10-27 17:44:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:05,465 INFO L93 Difference]: Finished difference Result 41942 states and 53417 transitions. [2020-10-27 17:44:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:05,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-27 17:44:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:05,538 INFO L225 Difference]: With dead ends: 41942 [2020-10-27 17:44:05,539 INFO L226 Difference]: Without dead ends: 23309 [2020-10-27 17:44:05,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23309 states. [2020-10-27 17:44:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23309 to 23292. [2020-10-27 17:44:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23292 states. [2020-10-27 17:44:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23292 states to 23292 states and 28438 transitions. [2020-10-27 17:44:06,045 INFO L78 Accepts]: Start accepts. Automaton has 23292 states and 28438 transitions. Word has length 242 [2020-10-27 17:44:06,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:06,046 INFO L481 AbstractCegarLoop]: Abstraction has 23292 states and 28438 transitions. [2020-10-27 17:44:06,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 23292 states and 28438 transitions. [2020-10-27 17:44:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 17:44:06,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:06,062 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2020-10-27 17:44:06,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:44:06,063 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:06,063 INFO L82 PathProgramCache]: Analyzing trace with hash 911130726, now seen corresponding path program 1 times [2020-10-27 17:44:06,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:06,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9607425] [2020-10-27 17:44:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 17:44:09,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:44:09,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3165 [2020-10-27 17:44:09,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:09,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-27 17:44:09,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:44:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:09,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:09,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:44:09,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:09,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:09,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:44:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:44:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 17:44:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:09,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:44:09,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 17:44:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:44:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 17:44:09,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9607425] [2020-10-27 17:44:09,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:09,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:09,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489526017] [2020-10-27 17:44:09,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:09,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:09,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:09,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:09,819 INFO L87 Difference]: Start difference. First operand 23292 states and 28438 transitions. Second operand 5 states. [2020-10-27 17:44:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:24,646 INFO L93 Difference]: Finished difference Result 52793 states and 66282 transitions. [2020-10-27 17:44:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:24,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-27 17:44:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:24,733 INFO L225 Difference]: With dead ends: 52793 [2020-10-27 17:44:24,733 INFO L226 Difference]: Without dead ends: 29507 [2020-10-27 17:44:24,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29507 states. [2020-10-27 17:44:25,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29507 to 29491. [2020-10-27 17:44:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-10-27 17:44:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 35878 transitions. [2020-10-27 17:44:25,386 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 35878 transitions. Word has length 285 [2020-10-27 17:44:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:25,387 INFO L481 AbstractCegarLoop]: Abstraction has 29491 states and 35878 transitions. [2020-10-27 17:44:25,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 35878 transitions. [2020-10-27 17:44:25,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-27 17:44:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:25,404 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:44:25,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:44:25,405 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:25,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2086315550, now seen corresponding path program 1 times [2020-10-27 17:44:25,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:25,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533012966] [2020-10-27 17:44:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:28,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:28,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 17:44:28,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:44:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3140 [2020-10-27 17:44:28,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:28,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-27 17:44:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:44:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:44:28,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:28,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:44:28,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:29,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:44:29,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 17:44:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 17:44:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:44:29,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533012966] [2020-10-27 17:44:29,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:29,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:29,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772888282] [2020-10-27 17:44:29,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:29,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:29,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:29,298 INFO L87 Difference]: Start difference. First operand 29491 states and 35878 transitions. Second operand 5 states. [2020-10-27 17:44:47,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:47,908 INFO L93 Difference]: Finished difference Result 86067 states and 107221 transitions. [2020-10-27 17:44:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:47,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-27 17:44:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:48,094 INFO L225 Difference]: With dead ends: 86067 [2020-10-27 17:44:48,094 INFO L226 Difference]: Without dead ends: 56582 [2020-10-27 17:44:48,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56582 states. [2020-10-27 17:44:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56582 to 56566. [2020-10-27 17:44:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56566 states. [2020-10-27 17:44:49,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56566 states to 56566 states and 68443 transitions. [2020-10-27 17:44:49,389 INFO L78 Accepts]: Start accepts. Automaton has 56566 states and 68443 transitions. Word has length 287 [2020-10-27 17:44:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:49,390 INFO L481 AbstractCegarLoop]: Abstraction has 56566 states and 68443 transitions. [2020-10-27 17:44:49,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 56566 states and 68443 transitions. [2020-10-27 17:44:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2020-10-27 17:44:49,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:49,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:44:49,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:44:49,556 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1717282008, now seen corresponding path program 1 times [2020-10-27 17:44:49,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:49,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506312160] [2020-10-27 17:44:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:54,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 774 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 600 [2020-10-27 17:44:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:54,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:54,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:54,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:55,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:55,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:55,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:44:55,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:55,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 17:44:55,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:55,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:55,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 17:44:55,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:55,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:44:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:56,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:56,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-27 17:44:56,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-27 17:44:56,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:44:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:44:56,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 604 [2020-10-27 17:44:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:44:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:57,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:44:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 316 [2020-10-27 17:44:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:44:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:58,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:44:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-27 17:44:58,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:44:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:44:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:44:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:44:59,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506312160] [2020-10-27 17:44:59,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:59,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:44:59,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081592479] [2020-10-27 17:44:59,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:44:59,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:59,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:44:59,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:44:59,077 INFO L87 Difference]: Start difference. First operand 56566 states and 68443 transitions. Second operand 7 states. [2020-10-27 17:45:00,836 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:45:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:29,214 INFO L93 Difference]: Finished difference Result 139533 states and 180617 transitions. [2020-10-27 17:45:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:45:29,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 756 [2020-10-27 17:45:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:29,605 INFO L225 Difference]: With dead ends: 139533 [2020-10-27 17:45:29,606 INFO L226 Difference]: Without dead ends: 82973 [2020-10-27 17:45:29,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:45:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82973 states. [2020-10-27 17:45:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82973 to 78181. [2020-10-27 17:45:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78181 states. [2020-10-27 17:45:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78181 states to 78181 states and 96243 transitions. [2020-10-27 17:45:32,155 INFO L78 Accepts]: Start accepts. Automaton has 78181 states and 96243 transitions. Word has length 756 [2020-10-27 17:45:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:32,157 INFO L481 AbstractCegarLoop]: Abstraction has 78181 states and 96243 transitions. [2020-10-27 17:45:32,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:45:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 78181 states and 96243 transitions. [2020-10-27 17:45:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-27 17:45:32,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:32,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:32,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 17:45:32,394 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:32,395 INFO L82 PathProgramCache]: Analyzing trace with hash -984810694, now seen corresponding path program 1 times [2020-10-27 17:45:32,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:32,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724245563] [2020-10-27 17:45:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY