/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/Problem17_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:43:58,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:43:58,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:43:58,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:43:58,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:43:58,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:43:58,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:43:58,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:43:58,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:43:58,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:43:58,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:43:58,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:43:58,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:43:58,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:43:58,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:43:58,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:43:58,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:43:58,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:43:58,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:43:58,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:43:58,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:43:58,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:43:58,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:43:58,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:43:58,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:43:58,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:43:58,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:43:58,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:43:58,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:43:58,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:43:58,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:43:58,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:43:58,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:43:58,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:43:58,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:43:58,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:43:58,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:43:58,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:43:58,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:43:58,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:43:58,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:43:58,655 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 13:43:58,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:43:58,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:43:58,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:43:58,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:43:58,691 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:43:58,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:43:58,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:43:58,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:43:58,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:43:58,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:43:58,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:43:58,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:43:58,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:43:58,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:43:58,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:43:58,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:43:58,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:43:58,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:43:58,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:43:58,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:43:58,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:43:58,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:43:58,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:43:58,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:43:58,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:43:58,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:43:58,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:43:58,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:43:58,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:43:58,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:43:59,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:43:59,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:43:59,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:43:59,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:43:59,240 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:43:59,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54.c [2020-10-28 13:43:59,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c181598d0/4b48d2414ae54101b4dc5ef0a6135d18/FLAGd23a8717f [2020-10-28 13:44:00,299 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:44:00,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label54.c [2020-10-28 13:44:00,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c181598d0/4b48d2414ae54101b4dc5ef0a6135d18/FLAGd23a8717f [2020-10-28 13:44:00,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c181598d0/4b48d2414ae54101b4dc5ef0a6135d18 [2020-10-28 13:44:00,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:44:00,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:44:00,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:44:00,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:44:00,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:44:00,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:44:00" (1/1) ... [2020-10-28 13:44:00,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa736ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:00, skipping insertion in model container [2020-10-28 13:44:00,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:44:00" (1/1) ... [2020-10-28 13:44:00,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:44:00,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:44:02,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:44:02,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:44:02,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:44:02,708 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:44:02,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02 WrapperNode [2020-10-28 13:44:02,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:44:02,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:44:02,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:44:02,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:44:02,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (1/1) ... [2020-10-28 13:44:02,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:44:02,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:44:02,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:44:02,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:44:02,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (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 13:44:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:44:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:44:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:44:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:44:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:44:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:44:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:44:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:44:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:44:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:44:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:44:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:44:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:44:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:44:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:44:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:44:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:44:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:44:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:44:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:44:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:44:12,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:44:12,805 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:44:12,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:44:12 BoogieIcfgContainer [2020-10-28 13:44:12,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:44:12,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:44:12,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:44:12,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:44:12,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:44:00" (1/3) ... [2020-10-28 13:44:12,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9fe0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:44:12, skipping insertion in model container [2020-10-28 13:44:12,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:02" (2/3) ... [2020-10-28 13:44:12,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9fe0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:44:12, skipping insertion in model container [2020-10-28 13:44:12,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:44:12" (3/3) ... [2020-10-28 13:44:12,820 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label54.c [2020-10-28 13:44:12,833 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:44:12,841 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:44:12,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:44:12,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:44:12,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:44:12,892 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:44:12,892 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:44:12,892 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:44:12,892 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:44:12,892 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:44:12,892 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:44:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:44:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 13:44:12,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:12,935 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] [2020-10-28 13:44:12,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:12,943 INFO L82 PathProgramCache]: Analyzing trace with hash -592398350, now seen corresponding path program 1 times [2020-10-28 13:44:12,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:12,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176874574] [2020-10-28 13:44:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:13,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 13:44:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-28 13:44:13,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:13,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:44:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 13:44:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:44:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:13,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:13,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:13,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:44:13,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:13,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:13,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:44:13,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:13,908 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 13:44:13,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176874574] [2020-10-28 13:44:13,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:44:13,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:44:13,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192870761] [2020-10-28 13:44:13,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:44:13,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:13,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:44:13,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:44:13,940 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:44:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:30,724 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:44:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:30,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 13:44:30,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:30,760 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:44:30,760 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:44:30,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:44:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:44:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:44:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:44:30,977 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 20 [2020-10-28 13:44:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:30,978 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:44:30,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:44:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:44:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 13:44:30,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:30,984 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:44:30,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:44:30,984 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2051425682, now seen corresponding path program 1 times [2020-10-28 13:44:30,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:30,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919812978] [2020-10-28 13:44:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:32,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:32,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 13:44:32,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:44:32,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1507 [2020-10-28 13:44:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:32,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:44:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:44:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:32,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:32,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:32,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:44:32,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:32,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:44:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:32,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:32,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:44:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 13:44:32,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:32,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:44:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:44:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:44:33,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919812978] [2020-10-28 13:44:33,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:44:33,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:44:33,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032784490] [2020-10-28 13:44:33,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:44:33,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:33,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:44:33,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:44:33,072 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:44:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:50,896 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-28 13:44:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:44:50,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 13:44:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:50,910 INFO L225 Difference]: With dead ends: 2964 [2020-10-28 13:44:50,910 INFO L226 Difference]: Without dead ends: 1967 [2020-10-28 13:44:50,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 13:44:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-28 13:44:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-28 13:44:51,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-28 13:44:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-28 13:44:51,014 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 91 [2020-10-28 13:44:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:51,015 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-28 13:44:51,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:44:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-28 13:44:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 13:44:51,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:51,022 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:44:51,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:44:51,025 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:51,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1353766561, now seen corresponding path program 1 times [2020-10-28 13:44:51,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:51,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668088102] [2020-10-28 13:44:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:51,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 13:44:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-28 13:44:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:51,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:44:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:44:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 13:44:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:51,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:44:51,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:51,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:44:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:44:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:44:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:51,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:51,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:44:51,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:44:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:51,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:51,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:44:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:44:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:44:51,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668088102] [2020-10-28 13:44:51,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:44:51,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:44:51,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409969400] [2020-10-28 13:44:51,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:44:51,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:51,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:44:51,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:51,849 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 5 states. [2020-10-28 13:45:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:06,931 INFO L93 Difference]: Finished difference Result 4732 states and 6292 transitions. [2020-10-28 13:45:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:06,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-28 13:45:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:06,951 INFO L225 Difference]: With dead ends: 4732 [2020-10-28 13:45:06,952 INFO L226 Difference]: Without dead ends: 2377 [2020-10-28 13:45:06,960 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 13:45:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-10-28 13:45:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2358. [2020-10-28 13:45:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-10-28 13:45:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2901 transitions. [2020-10-28 13:45:07,047 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2901 transitions. Word has length 94 [2020-10-28 13:45:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:07,048 INFO L481 AbstractCegarLoop]: Abstraction has 2358 states and 2901 transitions. [2020-10-28 13:45:07,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2901 transitions. [2020-10-28 13:45:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 13:45:07,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:07,053 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 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 13:45:07,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:45:07,054 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1933479214, now seen corresponding path program 1 times [2020-10-28 13:45:07,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:07,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315470854] [2020-10-28 13:45:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:08,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:45:08,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1785 [2020-10-28 13:45:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:08,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:45:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:45:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:09,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:09,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:09,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:45:09,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:09,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:09,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:09,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:45:09,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:09,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:09,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:45:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:09,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:45:09,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-28 13:45:09,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:09,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:45:09,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:45:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:45:10,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315470854] [2020-10-28 13:45:10,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:10,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:45:10,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82395631] [2020-10-28 13:45:10,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:45:10,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:10,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:45:10,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:45:10,065 INFO L87 Difference]: Start difference. First operand 2358 states and 2901 transitions. Second operand 7 states. [2020-10-28 13:45:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:27,200 INFO L93 Difference]: Finished difference Result 6076 states and 7737 transitions. [2020-10-28 13:45:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:45:27,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-28 13:45:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:27,226 INFO L225 Difference]: With dead ends: 6076 [2020-10-28 13:45:27,226 INFO L226 Difference]: Without dead ends: 3724 [2020-10-28 13:45:27,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:45:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2020-10-28 13:45:27,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3711. [2020-10-28 13:45:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3711 states. [2020-10-28 13:45:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 4545 transitions. [2020-10-28 13:45:27,397 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 4545 transitions. Word has length 180 [2020-10-28 13:45:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:27,399 INFO L481 AbstractCegarLoop]: Abstraction has 3711 states and 4545 transitions. [2020-10-28 13:45:27,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:45:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 4545 transitions. [2020-10-28 13:45:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 13:45:27,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:27,409 INFO L422 BasicCegarLoop]: trace histogram [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, 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 13:45:27,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:45:27,410 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:27,410 INFO L82 PathProgramCache]: Analyzing trace with hash -694322230, now seen corresponding path program 1 times [2020-10-28 13:45:27,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:27,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989759316] [2020-10-28 13:45:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:32,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:45:32,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:45:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:45:32,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:32,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:45:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 13:45:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:32,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:45:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:32,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:32,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:32,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:45:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:32,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:45:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:45:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:45:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:33,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:45:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:45:33,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989759316] [2020-10-28 13:45:33,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:33,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:33,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386552005] [2020-10-28 13:45:33,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:33,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:33,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:33,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:33,213 INFO L87 Difference]: Start difference. First operand 3711 states and 4545 transitions. Second operand 5 states. [2020-10-28 13:45:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:47,835 INFO L93 Difference]: Finished difference Result 11019 states and 13738 transitions. [2020-10-28 13:45:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:47,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-28 13:45:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:47,880 INFO L225 Difference]: With dead ends: 11019 [2020-10-28 13:45:47,880 INFO L226 Difference]: Without dead ends: 7314 [2020-10-28 13:45:47,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:45:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7314 states. [2020-10-28 13:45:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7314 to 6852. [2020-10-28 13:45:48,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6852 states. [2020-10-28 13:45:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 8622 transitions. [2020-10-28 13:45:48,080 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 8622 transitions. Word has length 182 [2020-10-28 13:45:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:48,081 INFO L481 AbstractCegarLoop]: Abstraction has 6852 states and 8622 transitions. [2020-10-28 13:45:48,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 8622 transitions. [2020-10-28 13:45:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 13:45:48,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:48,085 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:48,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:45:48,085 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:48,086 INFO L82 PathProgramCache]: Analyzing trace with hash -914877184, now seen corresponding path program 1 times [2020-10-28 13:45:48,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:48,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775548386] [2020-10-28 13:45:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:48,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:49,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 13:45:49,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-28 13:45:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:45:49,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:45:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:45:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:49,641 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:45:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:49,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:49,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:49,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:45:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:49,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:49,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:49,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:49,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:45:49,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:49,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:45:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:50,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:45:50,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-28 13:45:50,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:50,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:45:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:45:50,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775548386] [2020-10-28 13:45:50,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:50,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:45:50,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143559058] [2020-10-28 13:45:50,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:45:50,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:45:50,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:45:50,193 INFO L87 Difference]: Start difference. First operand 6852 states and 8622 transitions. Second operand 6 states. [2020-10-28 13:46:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:07,711 INFO L93 Difference]: Finished difference Result 14138 states and 18028 transitions. [2020-10-28 13:46:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:46:07,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2020-10-28 13:46:07,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:07,758 INFO L225 Difference]: With dead ends: 14138 [2020-10-28 13:46:07,758 INFO L226 Difference]: Without dead ends: 7292 [2020-10-28 13:46:07,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:46:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2020-10-28 13:46:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 6845. [2020-10-28 13:46:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6845 states. [2020-10-28 13:46:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6845 states to 6845 states and 8582 transitions. [2020-10-28 13:46:07,990 INFO L78 Accepts]: Start accepts. Automaton has 6845 states and 8582 transitions. Word has length 193 [2020-10-28 13:46:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:07,990 INFO L481 AbstractCegarLoop]: Abstraction has 6845 states and 8582 transitions. [2020-10-28 13:46:07,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:46:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6845 states and 8582 transitions. [2020-10-28 13:46:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 13:46:07,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:07,997 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:07,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:46:07,997 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash -345004215, now seen corresponding path program 1 times [2020-10-28 13:46:07,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:07,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441001917] [2020-10-28 13:46:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:13,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 13:46:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 13:46:13,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:13,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:46:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:46:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:13,360 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:46:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:13,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:13,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:13,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:46:13,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:13,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:13,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:13,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:13,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:13,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:46:13,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:13,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:13,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:13,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:46:13,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:13,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:46:13,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:46:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:13,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:46:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:13,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:46:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:13,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:13,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:46:13,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:46:13,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:13,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:13,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:46:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:46:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:46:14,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441001917] [2020-10-28 13:46:14,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:14,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:46:14,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719918567] [2020-10-28 13:46:14,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:46:14,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:46:14,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:46:14,178 INFO L87 Difference]: Start difference. First operand 6845 states and 8582 transitions. Second operand 7 states. [2020-10-28 13:46:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:31,294 INFO L93 Difference]: Finished difference Result 19218 states and 25151 transitions. [2020-10-28 13:46:31,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:46:31,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-28 13:46:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:31,351 INFO L225 Difference]: With dead ends: 19218 [2020-10-28 13:46:31,351 INFO L226 Difference]: Without dead ends: 11041 [2020-10-28 13:46:31,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:46:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11041 states. [2020-10-28 13:46:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11041 to 10943. [2020-10-28 13:46:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10943 states. [2020-10-28 13:46:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10943 states to 10943 states and 13165 transitions. [2020-10-28 13:46:31,688 INFO L78 Accepts]: Start accepts. Automaton has 10943 states and 13165 transitions. Word has length 269 [2020-10-28 13:46:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:31,689 INFO L481 AbstractCegarLoop]: Abstraction has 10943 states and 13165 transitions. [2020-10-28 13:46:31,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:46:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10943 states and 13165 transitions. [2020-10-28 13:46:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-28 13:46:31,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:31,697 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 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] [2020-10-28 13:46:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:46:31,698 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 362250559, now seen corresponding path program 1 times [2020-10-28 13:46:31,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:31,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120801884] [2020-10-28 13:46:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:36,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-28 13:46:36,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 13:46:36,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:36,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:46:36,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:46:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:46:37,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:37,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:37,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:37,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:37,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:46:37,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:37,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:37,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:37,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:37,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:46:37,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:46:37,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:37,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:46:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:46:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:37,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:37,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:46:37,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:37,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-28 13:46:37,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:37,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:46:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:46:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:46:38,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120801884] [2020-10-28 13:46:38,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:38,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:46:38,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81643238] [2020-10-28 13:46:38,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:46:38,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:38,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:46:38,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:46:38,061 INFO L87 Difference]: Start difference. First operand 10943 states and 13165 transitions. Second operand 7 states. [2020-10-28 13:46:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:55,292 INFO L93 Difference]: Finished difference Result 26592 states and 33071 transitions. [2020-10-28 13:46:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:46:55,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-28 13:46:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:55,343 INFO L225 Difference]: With dead ends: 26592 [2020-10-28 13:46:55,343 INFO L226 Difference]: Without dead ends: 15174 [2020-10-28 13:46:55,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 13:46:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15174 states. [2020-10-28 13:46:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15174 to 15099. [2020-10-28 13:46:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15099 states. [2020-10-28 13:46:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 18652 transitions. [2020-10-28 13:46:55,728 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 18652 transitions. Word has length 318 [2020-10-28 13:46:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:55,729 INFO L481 AbstractCegarLoop]: Abstraction has 15099 states and 18652 transitions. [2020-10-28 13:46:55,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:46:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 18652 transitions. [2020-10-28 13:46:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-28 13:46:55,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:55,740 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 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 13:46:55,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:46:55,740 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:55,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1898222588, now seen corresponding path program 1 times [2020-10-28 13:46:55,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:55,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112321216] [2020-10-28 13:46:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:55,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:59,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:59,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-28 13:46:59,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3944 [2020-10-28 13:46:59,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:59,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:46:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:46:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:46:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:59,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:00,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:00,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:00,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:47:00,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:00,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:47:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:00,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:00,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:00,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:47:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 13:47:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:00,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:47:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:00,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:47:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:00,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:00,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:47:00,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:00,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:47:00,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:00,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 13:47:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 124 proven. 108 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 13:47:01,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112321216] [2020-10-28 13:47:01,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:01,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:47:01,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699529721] [2020-10-28 13:47:01,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:47:01,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:01,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:47:01,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:47:01,169 INFO L87 Difference]: Start difference. First operand 15099 states and 18652 transitions. Second operand 7 states. [2020-10-28 13:47:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:21,230 INFO L93 Difference]: Finished difference Result 32062 states and 39621 transitions. [2020-10-28 13:47:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:47:21,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-28 13:47:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:21,292 INFO L225 Difference]: With dead ends: 32062 [2020-10-28 13:47:21,292 INFO L226 Difference]: Without dead ends: 16969 [2020-10-28 13:47:21,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:47:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16969 states. [2020-10-28 13:47:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16969 to 16913. [2020-10-28 13:47:21,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16913 states. [2020-10-28 13:47:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16913 states to 16913 states and 20840 transitions. [2020-10-28 13:47:21,745 INFO L78 Accepts]: Start accepts. Automaton has 16913 states and 20840 transitions. Word has length 344 [2020-10-28 13:47:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:21,746 INFO L481 AbstractCegarLoop]: Abstraction has 16913 states and 20840 transitions. [2020-10-28 13:47:21,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:47:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16913 states and 20840 transitions. [2020-10-28 13:47:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-28 13:47:21,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:21,760 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:47:21,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:47:21,760 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash 421653876, now seen corresponding path program 1 times [2020-10-28 13:47:21,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:21,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228222517] [2020-10-28 13:47:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:26,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:26,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-28 13:47:26,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:47:26,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:47:26,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:26,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-28 13:47:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:47:26,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:27,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:27,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:27,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:47:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:27,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:27,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:27,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:27,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:27,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:47:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:27,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:27,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:27,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:27,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:47:27,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 13:47:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:27,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:27,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:47:27,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:27,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-28 13:47:27,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:27,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:27,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:47:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:47:27,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228222517] [2020-10-28 13:47:27,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:27,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:47:27,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964724709] [2020-10-28 13:47:27,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:47:27,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:47:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:47:27,831 INFO L87 Difference]: Start difference. First operand 16913 states and 20840 transitions. Second operand 7 states.