/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=SHALLOWEST --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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:43:43,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:43:43,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:43:43,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:43:43,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:43:43,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:43:43,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:43:43,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:43:43,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:43:43,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:43:43,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:43:43,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:43:43,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:43:43,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:43:43,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:43:43,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:43:43,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:43:43,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:43:43,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:43:43,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:43:43,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:43:43,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:43:43,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:43:43,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:43:44,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:43:44,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:43:44,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:43:44,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:43:44,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:43:44,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:43:44,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:43:44,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:43:44,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:43:44,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:43:44,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:43:44,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:43:44,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:43:44,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:43:44,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:43:44,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:43:44,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:43:44,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:43:44,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:43:44,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:43:44,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:43:44,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:43:44,083 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:43:44,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:43:44,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:43:44,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:43:44,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:43:44,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:43:44,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:43:44,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:43:44,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:43:44,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:43:44,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:43:44,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:43:44,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:43:44,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:43:44,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:43:44,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:43:44,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:43:44,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:43:44,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:43:44,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:43:44,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:43:44,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:43:44,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:43:44,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:43:44,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:43:44,091 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:43:44,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:43:44,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:43:44,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:43:44,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:43:44,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:43:44,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:43:44,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e7f2e21/decd452ea0a94185be49393f7b74af0c/FLAG3e3860a6c [2020-10-27 05:43:45,556 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:43:45,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:43:45,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e7f2e21/decd452ea0a94185be49393f7b74af0c/FLAG3e3860a6c [2020-10-27 05:43:45,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e7f2e21/decd452ea0a94185be49393f7b74af0c [2020-10-27 05:43:45,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:43:45,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:43:45,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:43:45,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:43:45,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:43:45,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:45" (1/1) ... [2020-10-27 05:43:45,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281a42ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:45, skipping insertion in model container [2020-10-27 05:43:45,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:45" (1/1) ... [2020-10-27 05:43:45,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:43:45,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:43:46,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:43:46,471 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:43:47,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:43:47,029 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:43:47,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47 WrapperNode [2020-10-27 05:43:47,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:43:47,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:43:47,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:43:47,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:43:47,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... [2020-10-27 05:43:47,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:43:47,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:43:47,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:43:47,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:43:47,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:43:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:43:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:43:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:43:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:43:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:43:50,006 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:43:50,006 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:43:50,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:50 BoogieIcfgContainer [2020-10-27 05:43:50,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:43:50,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:43:50,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:43:50,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:43:50,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:45" (1/3) ... [2020-10-27 05:43:50,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d06e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:50, skipping insertion in model container [2020-10-27 05:43:50,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:47" (2/3) ... [2020-10-27 05:43:50,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d06e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:50, skipping insertion in model container [2020-10-27 05:43:50,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:50" (3/3) ... [2020-10-27 05:43:50,019 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:43:50,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:43:50,036 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:43:50,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:43:50,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:43:50,087 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:43:50,088 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:43:50,088 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:43:50,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:43:50,088 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:43:50,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:43:50,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:43:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states. [2020-10-27 05:43:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 05:43:50,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:43:50,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:43:50,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:43:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:43:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2073257526, now seen corresponding path program 1 times [2020-10-27 05:43:50,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:43:50,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711738476] [2020-10-27 05:43:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:43:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:50,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:55,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 05:43:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:43:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:43:55,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:43:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:43:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:43:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:43:56,722 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:43:56,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:43:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:43:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:43:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:43:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:43:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:43:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 05:43:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:43:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:43:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:43:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:43:56,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:43:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:43:56,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711738476] [2020-10-27 05:43:56,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:43:56,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:43:56,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885340829] [2020-10-27 05:43:56,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:43:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:43:56,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:43:56,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:43:56,905 INFO L87 Difference]: Start difference. First operand 711 states. Second operand 8 states. [2020-10-27 05:43:57,838 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:44:04,927 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:44:06,626 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:44:06,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:06,768 INFO L93 Difference]: Finished difference Result 1247 states and 2125 transitions. [2020-10-27 05:44:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:44:06,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-27 05:44:06,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:06,797 INFO L225 Difference]: With dead ends: 1247 [2020-10-27 05:44:06,798 INFO L226 Difference]: Without dead ends: 1006 [2020-10-27 05:44:06,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:44:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-27 05:44:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 707. [2020-10-27 05:44:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-27 05:44:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 947 transitions. [2020-10-27 05:44:06,932 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 947 transitions. Word has length 67 [2020-10-27 05:44:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:06,933 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 947 transitions. [2020-10-27 05:44:06,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:44:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 947 transitions. [2020-10-27 05:44:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:44:06,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:06,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:44:06,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:44:06,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1688312785, now seen corresponding path program 1 times [2020-10-27 05:44:06,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:06,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674754936] [2020-10-27 05:44:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:07,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:12,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:44:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:44:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:44:12,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:44:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 05:44:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:13,152 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:44:13,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:44:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:13,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:13,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:13,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:44:13,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:44:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 05:44:13,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:13,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:44:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:44:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:44:13,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:44:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:44:13,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674754936] [2020-10-27 05:44:13,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:44:13,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:44:13,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237490320] [2020-10-27 05:44:13,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:44:13,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:44:13,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:44:13,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:44:13,290 INFO L87 Difference]: Start difference. First operand 707 states and 947 transitions. Second operand 11 states. [2020-10-27 05:44:14,238 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:44:20,457 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:44:23,218 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:44:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:23,386 INFO L93 Difference]: Finished difference Result 1183 states and 1665 transitions. [2020-10-27 05:44:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 05:44:23,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-27 05:44:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:23,394 INFO L225 Difference]: With dead ends: 1183 [2020-10-27 05:44:23,394 INFO L226 Difference]: Without dead ends: 1102 [2020-10-27 05:44:23,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:44:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-27 05:44:23,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 746. [2020-10-27 05:44:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-10-27 05:44:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1004 transitions. [2020-10-27 05:44:23,446 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1004 transitions. Word has length 68 [2020-10-27 05:44:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:23,447 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1004 transitions. [2020-10-27 05:44:23,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:44:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1004 transitions. [2020-10-27 05:44:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:44:23,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:23,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:44:23,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:44:23,451 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:23,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1426160128, now seen corresponding path program 1 times [2020-10-27 05:44:23,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:23,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794359462] [2020-10-27 05:44:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:23,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:28,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:28,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:44:28,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:44:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:44:28,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:44:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 05:44:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:29,374 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:44:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:44:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:29,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:44:29,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:44:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 05:44:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:44:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:44:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:44:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:44:29,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794359462] [2020-10-27 05:44:29,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:44:29,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:44:29,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972956547] [2020-10-27 05:44:29,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:44:29,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:44:29,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:44:29,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:44:29,486 INFO L87 Difference]: Start difference. First operand 746 states and 1004 transitions. Second operand 6 states. [2020-10-27 05:44:30,440 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:44:34,591 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 05:44:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:35,172 INFO L93 Difference]: Finished difference Result 1308 states and 1811 transitions. [2020-10-27 05:44:35,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:44:35,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-27 05:44:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:35,180 INFO L225 Difference]: With dead ends: 1308 [2020-10-27 05:44:35,181 INFO L226 Difference]: Without dead ends: 758 [2020-10-27 05:44:35,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:44:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-27 05:44:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 755. [2020-10-27 05:44:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-10-27 05:44:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1045 transitions. [2020-10-27 05:44:35,257 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1045 transitions. Word has length 68 [2020-10-27 05:44:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:35,257 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 1045 transitions. [2020-10-27 05:44:35,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:44:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1045 transitions. [2020-10-27 05:44:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:44:35,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:35,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:44:35,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:44:35,263 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash 611953915, now seen corresponding path program 1 times [2020-10-27 05:44:35,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:35,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188703058] [2020-10-27 05:44:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:38,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:44:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:44:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:44:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:44:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 05:44:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:41,178 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:44:41,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:44:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:41,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:41,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:44:41,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:44:41,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 05:44:41,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:44:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:44:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:44:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:44:41,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188703058] [2020-10-27 05:44:41,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:44:41,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:44:41,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245463929] [2020-10-27 05:44:41,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:44:41,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:44:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:44:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:44:41,277 INFO L87 Difference]: Start difference. First operand 755 states and 1045 transitions. Second operand 8 states. [2020-10-27 05:44:42,156 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:44:46,333 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:44:48,247 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:44:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:48,483 INFO L93 Difference]: Finished difference Result 1656 states and 2392 transitions. [2020-10-27 05:44:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 05:44:48,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-27 05:44:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:48,492 INFO L225 Difference]: With dead ends: 1656 [2020-10-27 05:44:48,492 INFO L226 Difference]: Without dead ends: 1475 [2020-10-27 05:44:48,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 05:44:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2020-10-27 05:44:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 765. [2020-10-27 05:44:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-10-27 05:44:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1053 transitions. [2020-10-27 05:44:48,556 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1053 transitions. Word has length 69 [2020-10-27 05:44:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:48,556 INFO L481 AbstractCegarLoop]: Abstraction has 765 states and 1053 transitions. [2020-10-27 05:44:48,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:44:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1053 transitions. [2020-10-27 05:44:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:44:48,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:48,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:44:48,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:44:48,559 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash 400942652, now seen corresponding path program 1 times [2020-10-27 05:44:48,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:48,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967326290] [2020-10-27 05:44:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:53,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:53,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:44:53,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:44:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:44:54,580 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:44:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:44:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:54,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:44:54,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:44:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:44:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 05:44:54,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:44:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:44:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:44:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:44:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:44:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:44:54,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967326290] [2020-10-27 05:44:54,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:44:54,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:44:54,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474356164] [2020-10-27 05:44:54,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:44:54,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:44:54,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:44:54,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:44:54,675 INFO L87 Difference]: Start difference. First operand 765 states and 1053 transitions. Second operand 6 states. [2020-10-27 05:44:55,564 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:44:59,077 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:44:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:44:59,625 INFO L93 Difference]: Finished difference Result 1492 states and 2103 transitions. [2020-10-27 05:44:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:44:59,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-27 05:44:59,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:44:59,634 INFO L225 Difference]: With dead ends: 1492 [2020-10-27 05:44:59,635 INFO L226 Difference]: Without dead ends: 937 [2020-10-27 05:44:59,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:44:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2020-10-27 05:44:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 933. [2020-10-27 05:44:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-10-27 05:44:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1299 transitions. [2020-10-27 05:44:59,713 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1299 transitions. Word has length 69 [2020-10-27 05:44:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:44:59,713 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1299 transitions. [2020-10-27 05:44:59,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:44:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1299 transitions. [2020-10-27 05:44:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:44:59,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:44:59,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:44:59,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:44:59,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:44:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:44:59,717 INFO L82 PathProgramCache]: Analyzing trace with hash -371399307, now seen corresponding path program 1 times [2020-10-27 05:44:59,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:44:59,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125330822] [2020-10-27 05:44:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:44:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:44:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:44:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:04,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 05:45:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:05,759 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:45:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:45:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:05,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:05,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:45:05,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:45:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:45:05,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:45:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:45:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:45:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:45:05,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125330822] [2020-10-27 05:45:05,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:45:05,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:45:05,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742936361] [2020-10-27 05:45:05,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:45:05,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:45:05,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:45:05,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:45:05,846 INFO L87 Difference]: Start difference. First operand 933 states and 1299 transitions. Second operand 8 states. [2020-10-27 05:45:06,723 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:45:10,354 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:45:12,411 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:45:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:45:12,679 INFO L93 Difference]: Finished difference Result 2680 states and 3888 transitions. [2020-10-27 05:45:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:45:12,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-27 05:45:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:45:12,692 INFO L225 Difference]: With dead ends: 2680 [2020-10-27 05:45:12,693 INFO L226 Difference]: Without dead ends: 2373 [2020-10-27 05:45:12,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:45:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-10-27 05:45:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 961. [2020-10-27 05:45:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-27 05:45:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1341 transitions. [2020-10-27 05:45:12,802 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1341 transitions. Word has length 69 [2020-10-27 05:45:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:45:12,802 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1341 transitions. [2020-10-27 05:45:12,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:45:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1341 transitions. [2020-10-27 05:45:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:45:12,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:45:12,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:45:12,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:45:12,805 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:45:12,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:45:12,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1459385938, now seen corresponding path program 1 times [2020-10-27 05:45:12,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:45:12,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64013315] [2020-10-27 05:45:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:45:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:45:17,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:45:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:45:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:45:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:45:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:45:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:18,780 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:45:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:45:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:18,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:18,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:45:18,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:45:18,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 05:45:18,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:18,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:45:18,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:45:18,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:45:18,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:45:18,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64013315] [2020-10-27 05:45:18,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:45:18,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:45:18,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609883828] [2020-10-27 05:45:18,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:45:18,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:45:18,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:45:18,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:45:18,880 INFO L87 Difference]: Start difference. First operand 961 states and 1341 transitions. Second operand 8 states. [2020-10-27 05:45:19,826 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:45:23,760 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:45:25,674 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:45:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:45:25,923 INFO L93 Difference]: Finished difference Result 2475 states and 3573 transitions. [2020-10-27 05:45:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:45:25,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-27 05:45:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:45:25,933 INFO L225 Difference]: With dead ends: 2475 [2020-10-27 05:45:25,933 INFO L226 Difference]: Without dead ends: 2174 [2020-10-27 05:45:25,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:45:25,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-10-27 05:45:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 961. [2020-10-27 05:45:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-10-27 05:45:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1341 transitions. [2020-10-27 05:45:26,037 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1341 transitions. Word has length 70 [2020-10-27 05:45:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:45:26,037 INFO L481 AbstractCegarLoop]: Abstraction has 961 states and 1341 transitions. [2020-10-27 05:45:26,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:45:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1341 transitions. [2020-10-27 05:45:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:45:26,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:45:26,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:45:26,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:45:26,054 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:45:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:45:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash -489902818, now seen corresponding path program 1 times [2020-10-27 05:45:26,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:45:26,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808340349] [2020-10-27 05:45:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:45:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:26,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:26,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:26,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:31,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:45:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:45:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:45:31,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:45:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:45:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 05:45:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:32,057 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:45:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:45:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:32,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:32,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:45:32,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:45:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:45:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:45:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:45:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:45:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:45:32,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808340349] [2020-10-27 05:45:32,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:45:32,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:45:32,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90250957] [2020-10-27 05:45:32,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:45:32,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:45:32,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:45:32,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:45:32,164 INFO L87 Difference]: Start difference. First operand 961 states and 1341 transitions. Second operand 8 states. [2020-10-27 05:45:33,027 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:45:36,621 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:45:38,445 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:45:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:45:38,743 INFO L93 Difference]: Finished difference Result 3232 states and 4681 transitions. [2020-10-27 05:45:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:45:38,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-27 05:45:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:45:38,754 INFO L225 Difference]: With dead ends: 3232 [2020-10-27 05:45:38,754 INFO L226 Difference]: Without dead ends: 2741 [2020-10-27 05:45:38,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:45:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2020-10-27 05:45:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 991. [2020-10-27 05:45:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-27 05:45:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1375 transitions. [2020-10-27 05:45:38,881 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1375 transitions. Word has length 70 [2020-10-27 05:45:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:45:38,881 INFO L481 AbstractCegarLoop]: Abstraction has 991 states and 1375 transitions. [2020-10-27 05:45:38,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:45:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1375 transitions. [2020-10-27 05:45:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:45:38,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:45:38,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:45:38,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:45:38,885 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:45:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:45:38,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1527850456, now seen corresponding path program 1 times [2020-10-27 05:45:38,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:45:38,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006075868] [2020-10-27 05:45:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:45:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:38,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:40,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:43,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:45:43,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:45:43,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:45:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:45:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:45:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:45:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:45,147 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:45:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:45:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:45,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:45:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:45:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:45:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:45:45,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:45:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:45:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:45:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:45:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:45:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:45:45,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006075868] [2020-10-27 05:45:45,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:45:45,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:45:45,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031379155] [2020-10-27 05:45:45,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:45:45,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:45:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:45:45,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:45:45,302 INFO L87 Difference]: Start difference. First operand 991 states and 1375 transitions. Second operand 12 states. [2020-10-27 05:45:46,169 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:45:51,197 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 351 DAG size of output: 348 [2020-10-27 05:45:52,161 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:45:55,257 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 05:45:56,121 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 05:45:57,847 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 346 DAG size of output: 343 [2020-10-27 05:45:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:45:58,705 INFO L93 Difference]: Finished difference Result 3685 states and 5284 transitions. [2020-10-27 05:45:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 05:45:58,706 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-27 05:45:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:45:58,717 INFO L225 Difference]: With dead ends: 3685 [2020-10-27 05:45:58,718 INFO L226 Difference]: Without dead ends: 2988 [2020-10-27 05:45:58,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 05:45:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-10-27 05:45:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1057. [2020-10-27 05:45:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-10-27 05:45:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1491 transitions. [2020-10-27 05:45:58,887 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1491 transitions. Word has length 70 [2020-10-27 05:45:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:45:58,887 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1491 transitions. [2020-10-27 05:45:58,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:45:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1491 transitions. [2020-10-27 05:45:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:45:58,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:45:58,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:45:58,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:45:58,890 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:45:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:45:58,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1237001974, now seen corresponding path program 1 times [2020-10-27 05:45:58,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:45:58,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448105543] [2020-10-27 05:45:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:45:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:45:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:45:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:03,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:46:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:46:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:46:03,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:46:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:46:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:04,894 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:46:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:04,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:04,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:46:04,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448105543] [2020-10-27 05:46:04,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:04,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:46:04,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704483590] [2020-10-27 05:46:04,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:46:04,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:04,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:46:04,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:46:04,961 INFO L87 Difference]: Start difference. First operand 1057 states and 1491 transitions. Second operand 11 states. [2020-10-27 05:46:05,826 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 05:46:09,942 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:46:10,925 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:46:13,977 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:46:14,834 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:46:15,723 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:46:16,656 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:46:17,560 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:46:18,435 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:46:20,442 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-27 05:46:21,374 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:46:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:21,528 INFO L93 Difference]: Finished difference Result 7895 states and 11510 transitions. [2020-10-27 05:46:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 05:46:21,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-27 05:46:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:21,552 INFO L225 Difference]: With dead ends: 7895 [2020-10-27 05:46:21,552 INFO L226 Difference]: Without dead ends: 7008 [2020-10-27 05:46:21,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=537, Invalid=2115, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 05:46:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2020-10-27 05:46:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 1537. [2020-10-27 05:46:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2020-10-27 05:46:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2166 transitions. [2020-10-27 05:46:21,840 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2166 transitions. Word has length 70 [2020-10-27 05:46:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:21,841 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2166 transitions. [2020-10-27 05:46:21,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:46:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2166 transitions. [2020-10-27 05:46:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:46:21,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:21,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:46:21,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:46:21,843 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:21,844 INFO L82 PathProgramCache]: Analyzing trace with hash -53631583, now seen corresponding path program 1 times [2020-10-27 05:46:21,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:21,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025656327] [2020-10-27 05:46:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:25,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:25,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:26,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 05:46:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:27,728 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:46:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:46:27,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025656327] [2020-10-27 05:46:27,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:27,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:46:27,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426521941] [2020-10-27 05:46:27,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:46:27,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:46:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:46:27,790 INFO L87 Difference]: Start difference. First operand 1537 states and 2166 transitions. Second operand 8 states. [2020-10-27 05:46:28,633 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 05:46:31,552 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:46:33,908 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:46:34,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:34,674 INFO L93 Difference]: Finished difference Result 7333 states and 10665 transitions. [2020-10-27 05:46:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:46:34,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-27 05:46:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:34,701 INFO L225 Difference]: With dead ends: 7333 [2020-10-27 05:46:34,701 INFO L226 Difference]: Without dead ends: 6313 [2020-10-27 05:46:34,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:46:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2020-10-27 05:46:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 1539. [2020-10-27 05:46:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1539 states. [2020-10-27 05:46:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 2168 transitions. [2020-10-27 05:46:35,086 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 2168 transitions. Word has length 71 [2020-10-27 05:46:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:35,086 INFO L481 AbstractCegarLoop]: Abstraction has 1539 states and 2168 transitions. [2020-10-27 05:46:35,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:46:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 2168 transitions. [2020-10-27 05:46:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:46:35,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:35,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:46:35,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:46:35,090 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:35,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1735527050, now seen corresponding path program 1 times [2020-10-27 05:46:35,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:35,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835124096] [2020-10-27 05:46:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:39,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4464 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:46:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:40,625 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:46:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:40,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:46:40,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:46:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:46:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:46:40,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835124096] [2020-10-27 05:46:40,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:40,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:46:40,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769171932] [2020-10-27 05:46:40,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:46:40,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:40,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:46:40,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:46:40,692 INFO L87 Difference]: Start difference. First operand 1539 states and 2168 transitions. Second operand 9 states. [2020-10-27 05:46:41,608 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-27 05:46:45,334 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2020-10-27 05:46:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:46:46,897 INFO L93 Difference]: Finished difference Result 3686 states and 5338 transitions. [2020-10-27 05:46:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:46:46,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-27 05:46:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:46:46,902 INFO L225 Difference]: With dead ends: 3686 [2020-10-27 05:46:46,903 INFO L226 Difference]: Without dead ends: 2829 [2020-10-27 05:46:46,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-27 05:46:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2020-10-27 05:46:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1541. [2020-10-27 05:46:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-27 05:46:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2174 transitions. [2020-10-27 05:46:47,196 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2174 transitions. Word has length 71 [2020-10-27 05:46:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:46:47,197 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2174 transitions. [2020-10-27 05:46:47,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:46:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2174 transitions. [2020-10-27 05:46:47,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 05:46:47,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:47,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:46:47,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:46:47,200 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:47,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:47,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2033280491, now seen corresponding path program 1 times [2020-10-27 05:46:47,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:47,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540834390] [2020-10-27 05:46:47,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 05:46:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:53,162 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:46:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:53,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:46:53,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:46:53,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540834390] [2020-10-27 05:46:53,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:53,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:46:53,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928931099] [2020-10-27 05:46:53,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:46:53,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:53,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:46:53,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:46:53,270 INFO L87 Difference]: Start difference. First operand 1541 states and 2174 transitions. Second operand 9 states. [2020-10-27 05:46:54,114 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 05:46:57,802 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:47:00,116 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:47:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:01,001 INFO L93 Difference]: Finished difference Result 7040 states and 10209 transitions. [2020-10-27 05:47:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:47:01,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-27 05:47:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:01,012 INFO L225 Difference]: With dead ends: 7040 [2020-10-27 05:47:01,013 INFO L226 Difference]: Without dead ends: 6062 [2020-10-27 05:47:01,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:47:01,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6062 states. [2020-10-27 05:47:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6062 to 1546. [2020-10-27 05:47:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-10-27 05:47:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2179 transitions. [2020-10-27 05:47:01,326 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2179 transitions. Word has length 72 [2020-10-27 05:47:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:01,326 INFO L481 AbstractCegarLoop]: Abstraction has 1546 states and 2179 transitions. [2020-10-27 05:47:01,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:47:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2179 transitions. [2020-10-27 05:47:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 05:47:01,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:01,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:47:01,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:47:01,328 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:01,329 INFO L82 PathProgramCache]: Analyzing trace with hash 891339967, now seen corresponding path program 1 times [2020-10-27 05:47:01,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:01,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023415150] [2020-10-27 05:47:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:06,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 05:47:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:47:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:47:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:47:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:47:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:47:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:07,336 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:47:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:47:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:07,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:47:07,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:47:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:47:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:47:07,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023415150] [2020-10-27 05:47:07,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:47:07,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:47:07,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23659553] [2020-10-27 05:47:07,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:47:07,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:47:07,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:47:07,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:47:07,451 INFO L87 Difference]: Start difference. First operand 1546 states and 2179 transitions. Second operand 10 states. [2020-10-27 05:47:08,474 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:47:12,489 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:47:13,422 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:47:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:14,830 INFO L93 Difference]: Finished difference Result 3358 states and 4867 transitions. [2020-10-27 05:47:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 05:47:14,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-27 05:47:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:14,835 INFO L225 Difference]: With dead ends: 3358 [2020-10-27 05:47:14,835 INFO L226 Difference]: Without dead ends: 2499 [2020-10-27 05:47:14,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-27 05:47:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2020-10-27 05:47:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1577. [2020-10-27 05:47:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-10-27 05:47:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2226 transitions. [2020-10-27 05:47:15,188 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2226 transitions. Word has length 72 [2020-10-27 05:47:15,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:15,188 INFO L481 AbstractCegarLoop]: Abstraction has 1577 states and 2226 transitions. [2020-10-27 05:47:15,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:47:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2226 transitions. [2020-10-27 05:47:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 05:47:15,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:15,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:47:15,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:47:15,190 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:15,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1102351230, now seen corresponding path program 1 times [2020-10-27 05:47:15,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:15,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314792706] [2020-10-27 05:47:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:20,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:20,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 05:47:20,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:47:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:47:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:47:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:47:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:47:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0