/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem18_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:51:14,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:51:14,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:51:14,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:51:14,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:51:14,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:51:14,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:51:14,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:51:14,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:51:14,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:51:14,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:51:14,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:51:14,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:51:14,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:51:14,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:51:14,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:51:14,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:51:14,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:51:14,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:51:14,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:51:14,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:51:14,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:51:14,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:51:14,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:51:14,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:51:14,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:51:14,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:51:14,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:51:14,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:51:14,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:51:14,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:51:14,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:51:14,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:51:14,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:51:14,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:51:14,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:51:14,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:51:14,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:51:14,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:51:14,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:51:14,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:51:14,717 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 [2020-10-28 13:51:14,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:51:14,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:51:14,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:51:14,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:51:14,780 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:51:14,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:51:14,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:51:14,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:51:14,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:51:14,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:51:14,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:51:14,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:51:14,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:51:14,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:51:14,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:51:14,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:51:14,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:51:14,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:51:14,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:51:14,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:51:14,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:51:14,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:51:14,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:51:14,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:51:14,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:51:14,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:51:14,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:51:14,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:51:14,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:51:14,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:51:15,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:51:15,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:51:15,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:51:15,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:51:15,272 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:51:15,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-28 13:51:15,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefa729f0/d64baefaeb3948609f33092a012a8d0b/FLAG2b5717941 [2020-10-28 13:51:16,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:51:16,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2020-10-28 13:51:16,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefa729f0/d64baefaeb3948609f33092a012a8d0b/FLAG2b5717941 [2020-10-28 13:51:16,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefa729f0/d64baefaeb3948609f33092a012a8d0b [2020-10-28 13:51:16,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:51:16,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:51:16,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:51:16,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:51:16,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:51:16,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:51:16" (1/1) ... [2020-10-28 13:51:16,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9a57f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:16, skipping insertion in model container [2020-10-28 13:51:16,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:51:16" (1/1) ... [2020-10-28 13:51:16,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:51:17,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:51:18,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:51:18,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:51:18,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:51:18,851 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:51:18,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18 WrapperNode [2020-10-28 13:51:18,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:51:18,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:51:18,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:51:18,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:51:18,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:18,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:18,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:18,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:19,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:19,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:19,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... [2020-10-28 13:51:19,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:51:19,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:51:19,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:51:19,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:51:19,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:51:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:51:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:51:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:51:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:51:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:51:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:51:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:51:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:51:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:51:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:51:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:51:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:51:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:51:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:51:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:51:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:51:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:51:24,233 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:51:24,233 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:51:24,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:51:24 BoogieIcfgContainer [2020-10-28 13:51:24,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:51:24,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:51:24,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:51:24,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:51:24,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:51:16" (1/3) ... [2020-10-28 13:51:24,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b89220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:51:24, skipping insertion in model container [2020-10-28 13:51:24,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:51:18" (2/3) ... [2020-10-28 13:51:24,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b89220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:51:24, skipping insertion in model container [2020-10-28 13:51:24,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:51:24" (3/3) ... [2020-10-28 13:51:24,251 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label18.c [2020-10-28 13:51:24,265 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:51:24,273 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:51:24,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:51:24,324 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:51:24,325 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:51:24,325 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:51:24,325 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:51:24,325 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:51:24,325 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:51:24,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:51:24,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:51:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:51:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 13:51:24,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:24,379 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] [2020-10-28 13:51:24,379 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:24,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1171918200, now seen corresponding path program 1 times [2020-10-28 13:51:24,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:24,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184264913] [2020-10-28 13:51:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:24,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:51:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-28 13:51:25,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:51:25,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:51:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:25,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:25,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:51:25,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:51:25,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184264913] [2020-10-28 13:51:25,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:25,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:51:25,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062232981] [2020-10-28 13:51:25,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:51:25,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:25,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:51:25,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:51:25,634 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:51:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:40,286 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-28 13:51:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:51:40,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-28 13:51:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:40,328 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:51:40,328 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:51:40,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:51:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:51:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:51:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-28 13:51:40,527 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 64 [2020-10-28 13:51:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:40,528 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-28 13:51:40,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:51:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-28 13:51:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 13:51:40,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:40,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:40,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:51:40,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1977205392, now seen corresponding path program 1 times [2020-10-28 13:51:40,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:40,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989440391] [2020-10-28 13:51:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:42,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:42,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 13:51:42,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:51:42,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2151 [2020-10-28 13:51:42,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:42,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:42,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:42,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:51:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:51:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:42,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:42,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:42,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:51:42,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:42,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:42,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:51:42,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:43,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:43,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:51:43,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:43,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:51:43,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:43,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:43,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:51:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:51:43,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989440391] [2020-10-28 13:51:43,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:43,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:51:43,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040598539] [2020-10-28 13:51:43,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:43,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:43,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:43,276 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 7 states. [2020-10-28 13:51:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:55,044 INFO L93 Difference]: Finished difference Result 6513 states and 10959 transitions. [2020-10-28 13:51:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:51:55,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 13:51:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:55,085 INFO L225 Difference]: With dead ends: 6513 [2020-10-28 13:51:55,085 INFO L226 Difference]: Without dead ends: 4383 [2020-10-28 13:51:55,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4383 states. [2020-10-28 13:51:55,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4383 to 3592. [2020-10-28 13:51:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3592 states. [2020-10-28 13:51:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5294 transitions. [2020-10-28 13:51:55,272 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5294 transitions. Word has length 134 [2020-10-28 13:51:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:55,275 INFO L481 AbstractCegarLoop]: Abstraction has 3592 states and 5294 transitions. [2020-10-28 13:51:55,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5294 transitions. [2020-10-28 13:51:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 13:51:55,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:55,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:55,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:51:55,286 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1095506086, now seen corresponding path program 1 times [2020-10-28 13:51:55,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:55,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943464240] [2020-10-28 13:51:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:55,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:56,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 13:51:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:51:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-28 13:51:56,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:56,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:51:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:51:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:56,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:56,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:56,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:56,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:51:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:56,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:51:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:56,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:56,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:51:56,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:56,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:51:56,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:56,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:56,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:51:56,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:51:56,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943464240] [2020-10-28 13:51:56,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:51:56,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:51:56,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277325123] [2020-10-28 13:51:56,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:51:56,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:56,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:51:56,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:51:56,681 INFO L87 Difference]: Start difference. First operand 3592 states and 5294 transitions. Second operand 8 states. [2020-10-28 13:52:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:08,536 INFO L93 Difference]: Finished difference Result 8728 states and 12703 transitions. [2020-10-28 13:52:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:52:08,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-10-28 13:52:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:08,601 INFO L225 Difference]: With dead ends: 8728 [2020-10-28 13:52:08,601 INFO L226 Difference]: Without dead ends: 5142 [2020-10-28 13:52:08,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:52:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2020-10-28 13:52:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 5098. [2020-10-28 13:52:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5098 states. [2020-10-28 13:52:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 6850 transitions. [2020-10-28 13:52:08,759 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 6850 transitions. Word has length 139 [2020-10-28 13:52:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:08,759 INFO L481 AbstractCegarLoop]: Abstraction has 5098 states and 6850 transitions. [2020-10-28 13:52:08,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:52:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 6850 transitions. [2020-10-28 13:52:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 13:52:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:08,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:08,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:52:08,763 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:08,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1893442450, now seen corresponding path program 1 times [2020-10-28 13:52:08,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:08,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70079246] [2020-10-28 13:52:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 13:52:11,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-10-28 13:52:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:11,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:52:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:11,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:11,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:11,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:11,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:52:11,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:11,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:11,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:11,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:11,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:11,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:11,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:52:11,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 13:52:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:11,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:52:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:11,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70079246] [2020-10-28 13:52:11,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:11,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:52:11,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336080185] [2020-10-28 13:52:11,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:11,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:11,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:11,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:11,967 INFO L87 Difference]: Start difference. First operand 5098 states and 6850 transitions. Second operand 7 states. [2020-10-28 13:52:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:23,013 INFO L93 Difference]: Finished difference Result 11133 states and 15166 transitions. [2020-10-28 13:52:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:23,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-28 13:52:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:23,054 INFO L225 Difference]: With dead ends: 11133 [2020-10-28 13:52:23,055 INFO L226 Difference]: Without dead ends: 6041 [2020-10-28 13:52:23,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2020-10-28 13:52:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 5848. [2020-10-28 13:52:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2020-10-28 13:52:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 7655 transitions. [2020-10-28 13:52:23,276 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 7655 transitions. Word has length 161 [2020-10-28 13:52:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:23,277 INFO L481 AbstractCegarLoop]: Abstraction has 5848 states and 7655 transitions. [2020-10-28 13:52:23,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:23,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 7655 transitions. [2020-10-28 13:52:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 13:52:23,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:23,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:23,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:52:23,283 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:23,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1290403848, now seen corresponding path program 1 times [2020-10-28 13:52:23,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:23,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186557336] [2020-10-28 13:52:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:24,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 13:52:24,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-28 13:52:24,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:24,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:52:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:52:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:52:24,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:24,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:24,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:52:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:24,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:24,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:24,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:24,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:24,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:52:24,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:52:24,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:24,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:52:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:52:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:52:24,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186557336] [2020-10-28 13:52:24,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:24,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:52:24,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764267072] [2020-10-28 13:52:24,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:52:24,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:24,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:52:24,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:52:24,857 INFO L87 Difference]: Start difference. First operand 5848 states and 7655 transitions. Second operand 5 states. [2020-10-28 13:52:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:36,863 INFO L93 Difference]: Finished difference Result 16041 states and 21820 transitions. [2020-10-28 13:52:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:52:36,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-28 13:52:36,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:36,912 INFO L225 Difference]: With dead ends: 16041 [2020-10-28 13:52:36,912 INFO L226 Difference]: Without dead ends: 10901 [2020-10-28 13:52:36,926 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 [2020-10-28 13:52:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2020-10-28 13:52:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 10184. [2020-10-28 13:52:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10184 states. [2020-10-28 13:52:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 12967 transitions. [2020-10-28 13:52:37,188 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 12967 transitions. Word has length 250 [2020-10-28 13:52:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:37,189 INFO L481 AbstractCegarLoop]: Abstraction has 10184 states and 12967 transitions. [2020-10-28 13:52:37,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:52:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 12967 transitions. [2020-10-28 13:52:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 13:52:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:37,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:52:37,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:52:37,198 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:37,198 INFO L82 PathProgramCache]: Analyzing trace with hash 267032072, now seen corresponding path program 1 times [2020-10-28 13:52:37,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:37,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272652886] [2020-10-28 13:52:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:38,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-28 13:52:38,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1712 [2020-10-28 13:52:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:38,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:52:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:52:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:39,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:39,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:39,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:39,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:52:39,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:39,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:39,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:52:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:52:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:39,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:52:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:52:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:39,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:39,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:52:39,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:39,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:52:39,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:39,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:39,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:52:39,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:52:39,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272652886] [2020-10-28 13:52:39,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:39,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:52:39,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084755422] [2020-10-28 13:52:39,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:39,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:39,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:39,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:39,986 INFO L87 Difference]: Start difference. First operand 10184 states and 12967 transitions. Second operand 7 states. [2020-10-28 13:52:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:55,076 INFO L93 Difference]: Finished difference Result 21858 states and 27638 transitions. [2020-10-28 13:52:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:52:55,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-28 13:52:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:55,115 INFO L225 Difference]: With dead ends: 21858 [2020-10-28 13:52:55,116 INFO L226 Difference]: Without dead ends: 11600 [2020-10-28 13:52:55,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:52:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2020-10-28 13:52:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 10176. [2020-10-28 13:52:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10176 states. [2020-10-28 13:52:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10176 states to 10176 states and 11266 transitions. [2020-10-28 13:52:55,407 INFO L78 Accepts]: Start accepts. Automaton has 10176 states and 11266 transitions. Word has length 372 [2020-10-28 13:52:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:55,407 INFO L481 AbstractCegarLoop]: Abstraction has 10176 states and 11266 transitions. [2020-10-28 13:52:55,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 10176 states and 11266 transitions. [2020-10-28 13:52:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-28 13:52:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:55,421 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:52:55,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:52:55,422 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:55,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1035257032, now seen corresponding path program 1 times [2020-10-28 13:52:55,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:55,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780285727] [2020-10-28 13:52:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:53:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:00,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:00,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:00,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:00,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:53:00,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:00,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:00,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:01,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:01,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:01,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:01,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 13:53:01,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:01,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:01,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:01,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:01,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:53:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:01,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:01,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:01,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:01,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:53:01,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-28 13:53:01,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:01,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:53:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:53:02,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780285727] [2020-10-28 13:53:02,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:02,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:02,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149706635] [2020-10-28 13:53:02,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:02,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:02,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:02,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:02,123 INFO L87 Difference]: Start difference. First operand 10176 states and 11266 transitions. Second operand 7 states. [2020-10-28 13:53:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:13,424 INFO L93 Difference]: Finished difference Result 25063 states and 29022 transitions. [2020-10-28 13:53:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:53:13,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-28 13:53:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:13,481 INFO L225 Difference]: With dead ends: 25063 [2020-10-28 13:53:13,482 INFO L226 Difference]: Without dead ends: 14879 [2020-10-28 13:53:13,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14879 states. [2020-10-28 13:53:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14879 to 14731. [2020-10-28 13:53:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14731 states. [2020-10-28 13:53:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14731 states to 14731 states and 16404 transitions. [2020-10-28 13:53:13,941 INFO L78 Accepts]: Start accepts. Automaton has 14731 states and 16404 transitions. Word has length 493 [2020-10-28 13:53:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:13,942 INFO L481 AbstractCegarLoop]: Abstraction has 14731 states and 16404 transitions. [2020-10-28 13:53:13,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 14731 states and 16404 transitions. [2020-10-28 13:53:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-28 13:53:13,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:13,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:53:13,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:53:13,964 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1307759046, now seen corresponding path program 1 times [2020-10-28 13:53:13,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:13,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952893817] [2020-10-28 13:53:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:14,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:19,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-28 13:53:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:19,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 13:53:19,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:19,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:19,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 411 [2020-10-28 13:53:19,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:53:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:19,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:19,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:19,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:53:19,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:19,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:19,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:19,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:19,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:19,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:19,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:53:19,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:19,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:19,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:19,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:19,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:19,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:53:19,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:19,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:19,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:19,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:53:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:53:19,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:19,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:53:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:53:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:19,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:53:19,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:53:19,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:19,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 13:53:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 13:53:20,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952893817] [2020-10-28 13:53:20,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:20,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:20,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680090679] [2020-10-28 13:53:20,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:20,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:20,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:20,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:20,370 INFO L87 Difference]: Start difference. First operand 14731 states and 16404 transitions. Second operand 7 states. [2020-10-28 13:53:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:32,153 INFO L93 Difference]: Finished difference Result 34118 states and 39839 transitions. [2020-10-28 13:53:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:53:32,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-10-28 13:53:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:32,238 INFO L225 Difference]: With dead ends: 34118 [2020-10-28 13:53:32,238 INFO L226 Difference]: Without dead ends: 20095 [2020-10-28 13:53:32,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:53:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20095 states. [2020-10-28 13:53:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20095 to 19222. [2020-10-28 13:53:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19222 states. [2020-10-28 13:53:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19222 states to 19222 states and 21609 transitions. [2020-10-28 13:53:32,724 INFO L78 Accepts]: Start accepts. Automaton has 19222 states and 21609 transitions. Word has length 586 [2020-10-28 13:53:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:32,725 INFO L481 AbstractCegarLoop]: Abstraction has 19222 states and 21609 transitions. [2020-10-28 13:53:32,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 19222 states and 21609 transitions. [2020-10-28 13:53:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2020-10-28 13:53:32,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:32,746 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-28 13:53:32,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:53:32,746 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:32,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash 434767058, now seen corresponding path program 1 times [2020-10-28 13:53:32,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:32,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678388799] [2020-10-28 13:53:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:33,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:37,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-28 13:53:37,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:53:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:37,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:53:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:53:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:38,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:53:38,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:53:38,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 13:53:38,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:53:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:53:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:53:38,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:53:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:53:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:38,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:53:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:53:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:53:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:53:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:53:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-28 13:53:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:38,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:53:38,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:53:38,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:38,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 13:53:38,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:38,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 319 proven. 141 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-28 13:53:39,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678388799] [2020-10-28 13:53:39,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:39,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:39,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791671806] [2020-10-28 13:53:39,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:39,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:39,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:39,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:39,294 INFO L87 Difference]: Start difference. First operand 19222 states and 21609 transitions. Second operand 7 states. [2020-10-28 13:53:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:48,947 INFO L93 Difference]: Finished difference Result 54184 states and 61827 transitions. [2020-10-28 13:53:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:53:48,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 606 [2020-10-28 13:53:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:49,040 INFO L225 Difference]: With dead ends: 54184 [2020-10-28 13:53:49,040 INFO L226 Difference]: Without dead ends: 34958 [2020-10-28 13:53:49,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34958 states. [2020-10-28 13:53:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34958 to 34902. [2020-10-28 13:53:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34902 states. [2020-10-28 13:53:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34902 states to 34902 states and 38904 transitions. [2020-10-28 13:53:49,781 INFO L78 Accepts]: Start accepts. Automaton has 34902 states and 38904 transitions. Word has length 606 [2020-10-28 13:53:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:49,782 INFO L481 AbstractCegarLoop]: Abstraction has 34902 states and 38904 transitions. [2020-10-28 13:53:49,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 34902 states and 38904 transitions. [2020-10-28 13:53:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-28 13:53:49,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:49,816 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-28 13:53:49,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:53:49,816 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:49,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1824642839, now seen corresponding path program 1 times [2020-10-28 13:53:49,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:49,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746312929] [2020-10-28 13:53:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:55,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 718 [2020-10-28 13:53:55,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 13:53:55,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:55,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 13:53:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:53:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:55,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:55,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:55,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:55,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:53:55,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:55,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 13:53:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:53:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:55,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:53:55,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:55,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:53:55,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:55,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:53:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:53:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:55,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 13:53:55,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:56,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-10-28 13:53:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:56,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:56,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:53:56,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:56,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:53:56,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:56,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-28 13:53:56,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:56,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 366 proven. 124 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-28 13:53:56,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746312929] [2020-10-28 13:53:56,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:56,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:53:56,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79879824] [2020-10-28 13:53:56,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:56,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:56,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:56,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:56,415 INFO L87 Difference]: Start difference. First operand 34902 states and 38904 transitions. Second operand 7 states. [2020-10-28 13:54:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:06,473 INFO L93 Difference]: Finished difference Result 76266 states and 85734 transitions. [2020-10-28 13:54:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:06,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 700 [2020-10-28 13:54:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:06,595 INFO L225 Difference]: With dead ends: 76266 [2020-10-28 13:54:06,595 INFO L226 Difference]: Without dead ends: 41362 [2020-10-28 13:54:06,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41362 states. [2020-10-28 13:54:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41362 to 41328. [2020-10-28 13:54:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41328 states. [2020-10-28 13:54:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41328 states to 41328 states and 46220 transitions. [2020-10-28 13:54:07,515 INFO L78 Accepts]: Start accepts. Automaton has 41328 states and 46220 transitions. Word has length 700 [2020-10-28 13:54:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:07,516 INFO L481 AbstractCegarLoop]: Abstraction has 41328 states and 46220 transitions. [2020-10-28 13:54:07,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 41328 states and 46220 transitions. [2020-10-28 13:54:07,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2020-10-28 13:54:07,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:07,547 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:54:07,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:54:07,547 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash 75517803, now seen corresponding path program 1 times [2020-10-28 13:54:07,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:07,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324960595] [2020-10-28 13:54:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:07,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:12,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:12,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1319 [2020-10-28 13:54:12,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:12,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 13:54:12,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:12,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:12,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 983 [2020-10-28 13:54:12,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 13:54:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:13,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:13,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:54:13,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:54:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:13,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:54:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:54:13,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:54:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:54:13,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:54:13,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:13,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:54:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:54:13,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:54:13,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:13,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-28 13:54:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:14,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:14,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:54:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:54:14,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:14,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:54:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-28 13:54:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:14,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 13:54:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1163 [2020-10-28 13:54:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:14,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 13:54:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:14,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 799 proven. 73 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2020-10-28 13:54:15,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324960595] [2020-10-28 13:54:15,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:15,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:15,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448437197] [2020-10-28 13:54:15,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:15,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:15,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:15,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:15,303 INFO L87 Difference]: Start difference. First operand 41328 states and 46220 transitions. Second operand 7 states. [2020-10-28 13:54:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:25,605 INFO L93 Difference]: Finished difference Result 96126 states and 107538 transitions. [2020-10-28 13:54:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:25,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1293 [2020-10-28 13:54:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:25,776 INFO L225 Difference]: With dead ends: 96126 [2020-10-28 13:54:25,777 INFO L226 Difference]: Without dead ends: 56216 [2020-10-28 13:54:25,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56216 states. [2020-10-28 13:54:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56216 to 55483. [2020-10-28 13:54:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55483 states. [2020-10-28 13:54:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55483 states to 55483 states and 61259 transitions. [2020-10-28 13:54:26,905 INFO L78 Accepts]: Start accepts. Automaton has 55483 states and 61259 transitions. Word has length 1293 [2020-10-28 13:54:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:26,906 INFO L481 AbstractCegarLoop]: Abstraction has 55483 states and 61259 transitions. [2020-10-28 13:54:26,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 55483 states and 61259 transitions. [2020-10-28 13:54:26,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2020-10-28 13:54:26,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:27,256 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:54:27,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:54:27,257 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1734044708, now seen corresponding path program 1 times [2020-10-28 13:54:27,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:27,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635461595] [2020-10-28 13:54:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:32,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1383 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:54:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:32,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:32,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:32,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:33,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:54:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:54:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:54:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:54:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:33,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:54:33,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:33,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:54:33,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:33,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:54:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:33,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:54:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:54:33,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-28 13:54:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:33,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 13:54:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2020-10-28 13:54:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:34,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:34,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 13:54:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2169 backedges. 787 proven. 94 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2020-10-28 13:54:35,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635461595] [2020-10-28 13:54:35,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:35,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:35,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632893511] [2020-10-28 13:54:35,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:35,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:35,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:35,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:35,244 INFO L87 Difference]: Start difference. First operand 55483 states and 61259 transitions. Second operand 7 states. [2020-10-28 13:54:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:47,033 INFO L93 Difference]: Finished difference Result 111710 states and 123719 transitions. [2020-10-28 13:54:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:54:47,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1355 [2020-10-28 13:54:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:47,229 INFO L225 Difference]: With dead ends: 111710 [2020-10-28 13:54:47,229 INFO L226 Difference]: Without dead ends: 57645 [2020-10-28 13:54:47,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57645 states.