/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:47:10,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:47:10,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:47:10,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:47:10,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:47:10,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:47:10,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:47:10,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:47:10,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:47:10,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:47:10,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:47:10,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:47:10,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:47:10,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:47:10,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:47:10,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:47:10,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:47:10,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:47:10,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:47:10,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:47:10,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:47:10,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:47:10,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:47:10,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:47:10,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:47:10,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:47:10,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:47:10,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:47:10,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:47:10,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:47:10,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:47:10,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:47:10,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:47:10,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:47:10,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:47:10,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:47:10,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:47:10,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:47:10,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:47:10,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:47:10,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:47:10,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:47:10,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:47:10,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:47:10,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:47:10,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:47:10,510 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:47:10,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:47:10,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:47:10,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:47:10,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:47:10,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:47:10,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:47:10,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:47:10,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:47:10,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:47:10,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:47:10,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:47:10,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:47:10,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:47:10,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:47:10,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:47:10,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:47:10,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:47:10,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:47:10,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:47:10,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:47:10,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:47:10,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:47:10,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:47:10,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:47:10,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:47:10,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:47:10,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:47:10,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:47:10,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:47:10,955 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:47:10,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-28 18:47:11,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/139263049/78287e2b814945089297188743d06b58/FLAGb100569b7 [2020-10-28 18:47:12,114 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:47:12,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-28 18:47:12,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/139263049/78287e2b814945089297188743d06b58/FLAGb100569b7 [2020-10-28 18:47:12,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/139263049/78287e2b814945089297188743d06b58 [2020-10-28 18:47:12,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:47:12,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:47:12,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:47:12,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:47:12,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:47:12,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:47:12" (1/1) ... [2020-10-28 18:47:12,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4980f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:12, skipping insertion in model container [2020-10-28 18:47:12,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:47:12" (1/1) ... [2020-10-28 18:47:12,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:47:12,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:47:15,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:47:15,159 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:47:16,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:47:16,391 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:47:16,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16 WrapperNode [2020-10-28 18:47:16,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:47:16,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:47:16,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:47:16,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:47:16,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... [2020-10-28 18:47:16,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:47:16,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:47:16,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:47:16,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:47:16,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:47:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:47:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:47:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:47:16,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:47:16,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:47:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:47:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:47:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:47:16,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:47:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:47:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:47:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:47:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:47:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:47:16,927 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:47:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:47:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:47:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:47:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:47:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:47:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:47:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 18:47:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:47:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:47:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:47:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:47:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:47:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:47:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:47:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:47:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:47:23,743 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:47:23,743 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:47:23,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:47:23 BoogieIcfgContainer [2020-10-28 18:47:23,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:47:23,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:47:23,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:47:23,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:47:23,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:47:12" (1/3) ... [2020-10-28 18:47:23,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd69a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:47:23, skipping insertion in model container [2020-10-28 18:47:23,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:16" (2/3) ... [2020-10-28 18:47:23,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd69a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:47:23, skipping insertion in model container [2020-10-28 18:47:23,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:47:23" (3/3) ... [2020-10-28 18:47:23,763 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-28 18:47:23,775 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:47:23,782 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:47:23,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:47:23,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:47:23,846 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:47:23,846 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:47:23,846 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:47:23,846 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:47:23,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:47:23,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:47:23,847 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:47:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states. [2020-10-28 18:47:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:47:23,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:23,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:23,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1948812266, now seen corresponding path program 1 times [2020-10-28 18:47:23,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:23,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130319264] [2020-10-28 18:47:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:25,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:29,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:47:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:47:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 18:47:29,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:29,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:47:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:47:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:47:33,722 WARN L193 SmtUtils]: Spent 3.72 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:47:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:33,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:33,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 18:47:33,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:33,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:47:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:47:34,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130319264] [2020-10-28 18:47:34,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:34,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:47:34,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442918599] [2020-10-28 18:47:34,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:34,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:34,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:34,088 INFO L87 Difference]: Start difference. First operand 2091 states. Second operand 6 states. [2020-10-28 18:47:38,128 WARN L193 SmtUtils]: Spent 3.86 s on a formula simplification that was a NOOP. DAG size: 808 [2020-10-28 18:48:01,487 WARN L193 SmtUtils]: Spent 3.81 s on a formula simplification that was a NOOP. DAG size: 806 [2020-10-28 18:48:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:02,695 INFO L93 Difference]: Finished difference Result 3633 states and 6476 transitions. [2020-10-28 18:48:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:48:02,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-28 18:48:02,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:02,746 INFO L225 Difference]: With dead ends: 3633 [2020-10-28 18:48:02,747 INFO L226 Difference]: Without dead ends: 2109 [2020-10-28 18:48:02,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:48:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-10-28 18:48:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2027. [2020-10-28 18:48:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-10-28 18:48:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2763 transitions. [2020-10-28 18:48:02,970 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2763 transitions. Word has length 106 [2020-10-28 18:48:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:02,971 INFO L481 AbstractCegarLoop]: Abstraction has 2027 states and 2763 transitions. [2020-10-28 18:48:02,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2763 transitions. [2020-10-28 18:48:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 18:48:02,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:02,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:02,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:48:02,987 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:02,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1460411003, now seen corresponding path program 1 times [2020-10-28 18:48:02,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:02,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64108140] [2020-10-28 18:48:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:05,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:08,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 18:48:08,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:48:08,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 18:48:08,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:08,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:48:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:48:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:48:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:12,348 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:48:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:12,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:12,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:12,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 18:48:12,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:12,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:12,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:12,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64108140] [2020-10-28 18:48:12,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:12,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:48:12,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749516269] [2020-10-28 18:48:12,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:48:12,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:48:12,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:48:12,542 INFO L87 Difference]: Start difference. First operand 2027 states and 2763 transitions. Second operand 7 states. [2020-10-28 18:48:16,458 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:48:41,861 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:48:46,601 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 805 [2020-10-28 18:48:51,851 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification that was a NOOP. DAG size: 800 [2020-10-28 18:48:56,058 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification that was a NOOP. DAG size: 801 [2020-10-28 18:49:02,410 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification that was a NOOP. DAG size: 802 [2020-10-28 18:49:06,601 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:49:11,059 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification that was a NOOP. DAG size: 804 [2020-10-28 18:49:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:11,096 INFO L93 Difference]: Finished difference Result 7569 states and 10803 transitions. [2020-10-28 18:49:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:49:11,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-28 18:49:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:11,133 INFO L225 Difference]: With dead ends: 7569 [2020-10-28 18:49:11,133 INFO L226 Difference]: Without dead ends: 6041 [2020-10-28 18:49:11,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 18:49:11,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2020-10-28 18:49:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 4160. [2020-10-28 18:49:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2020-10-28 18:49:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 5935 transitions. [2020-10-28 18:49:11,385 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 5935 transitions. Word has length 107 [2020-10-28 18:49:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:11,386 INFO L481 AbstractCegarLoop]: Abstraction has 4160 states and 5935 transitions. [2020-10-28 18:49:11,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:49:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 5935 transitions. [2020-10-28 18:49:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 18:49:11,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:11,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:11,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:49:11,397 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1712957349, now seen corresponding path program 1 times [2020-10-28 18:49:11,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:11,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336273740] [2020-10-28 18:49:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:11,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:16,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 18:49:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:49:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:49:16,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:16,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:49:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:21,387 WARN L193 SmtUtils]: Spent 4.55 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:49:21,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:21,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:21,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:21,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 18:49:21,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:21,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:21,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:21,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:21,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336273740] [2020-10-28 18:49:21,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:21,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:21,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247753398] [2020-10-28 18:49:21,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:21,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:21,629 INFO L87 Difference]: Start difference. First operand 4160 states and 5935 transitions. Second operand 6 states. [2020-10-28 18:49:26,107 WARN L193 SmtUtils]: Spent 4.29 s on a formula simplification that was a NOOP. DAG size: 808 [2020-10-28 18:49:41,435 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification that was a NOOP. DAG size: 806 [2020-10-28 18:49:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:42,442 INFO L93 Difference]: Finished difference Result 10020 states and 14555 transitions. [2020-10-28 18:49:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:49:42,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 18:49:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:42,468 INFO L225 Difference]: With dead ends: 10020 [2020-10-28 18:49:42,468 INFO L226 Difference]: Without dead ends: 6143 [2020-10-28 18:49:42,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:49:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2020-10-28 18:49:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 6085. [2020-10-28 18:49:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6085 states. [2020-10-28 18:49:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6085 states to 6085 states and 8863 transitions. [2020-10-28 18:49:42,783 INFO L78 Accepts]: Start accepts. Automaton has 6085 states and 8863 transitions. Word has length 108 [2020-10-28 18:49:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:42,784 INFO L481 AbstractCegarLoop]: Abstraction has 6085 states and 8863 transitions. [2020-10-28 18:49:42,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 6085 states and 8863 transitions. [2020-10-28 18:49:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 18:49:42,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:42,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:42,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:49:42,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:42,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:42,806 INFO L82 PathProgramCache]: Analyzing trace with hash 367435518, now seen corresponding path program 1 times [2020-10-28 18:49:42,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:42,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185556311] [2020-10-28 18:49:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:42,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 18:49:47,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:49:47,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 18:49:47,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:47,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:47,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:47,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 18:49:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:49:52,118 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:49:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:52,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:52,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:52,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 18:49:52,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:52,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:52,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185556311] [2020-10-28 18:49:52,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:52,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:52,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247219338] [2020-10-28 18:49:52,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:52,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:52,331 INFO L87 Difference]: Start difference. First operand 6085 states and 8863 transitions. Second operand 6 states. [2020-10-28 18:49:56,632 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 808 [2020-10-28 18:50:12,318 WARN L193 SmtUtils]: Spent 4.03 s on a formula simplification that was a NOOP. DAG size: 806 [2020-10-28 18:50:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:13,357 INFO L93 Difference]: Finished difference Result 7272 states and 10443 transitions. [2020-10-28 18:50:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:50:13,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-10-28 18:50:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:13,370 INFO L225 Difference]: With dead ends: 7272 [2020-10-28 18:50:13,371 INFO L226 Difference]: Without dead ends: 3243 [2020-10-28 18:50:13,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:50:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-10-28 18:50:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3163. [2020-10-28 18:50:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-28 18:50:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4450 transitions. [2020-10-28 18:50:13,557 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4450 transitions. Word has length 109 [2020-10-28 18:50:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:13,558 INFO L481 AbstractCegarLoop]: Abstraction has 3163 states and 4450 transitions. [2020-10-28 18:50:13,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4450 transitions. [2020-10-28 18:50:13,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 18:50:13,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:13,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:13,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:50:13,566 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:13,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1071497307, now seen corresponding path program 1 times [2020-10-28 18:50:13,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:13,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365452220] [2020-10-28 18:50:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:16,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:18,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:18,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 18:50:18,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:50:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:50:18,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:18,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:50:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:50:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 18:50:18,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:22,907 WARN L193 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:50:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:22,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 18:50:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:22,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:50:23,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365452220] [2020-10-28 18:50:23,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:23,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:50:23,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446634973] [2020-10-28 18:50:23,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:50:23,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:50:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:50:23,049 INFO L87 Difference]: Start difference. First operand 3163 states and 4450 transitions. Second operand 7 states. [2020-10-28 18:50:27,226 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:50:50,035 WARN L193 SmtUtils]: Spent 3.94 s on a formula simplification that was a NOOP. DAG size: 803