/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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:46:02,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:46:02,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:46:02,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:46:02,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:46:02,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:46:02,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:46:02,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:46:02,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:46:02,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:46:02,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:46:02,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:46:02,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:46:02,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:46:02,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:46:02,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:46:02,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:46:02,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:46:02,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:46:02,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:46:02,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:46:02,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:46:02,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:46:02,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:46:02,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:46:02,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:46:02,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:46:02,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:46:02,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:46:02,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:46:02,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:46:02,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:46:02,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:46:02,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:46:02,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:46:02,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:46:02,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:46:02,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:46:02,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:46:02,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:46:02,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:46:02,415 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 05:46:02,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:46:02,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:46:02,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:46:02,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:46:02,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:46:02,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:46:02,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:46:02,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:46:02,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:46:02,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:46:02,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:46:02,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:46:02,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:46:02,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:46:02,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:46:02,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:46:02,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:46:02,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:46:02,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:46:02,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:46:02,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:46:02,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:46:02,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:46:02,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:46:02,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:46:02,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:46:02,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:46:02,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:46:02,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:46:02,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:46:02,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:46:02,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:46:02,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:46:02,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:46:02,838 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:46:02,840 INFO L432 ainManager$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.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 05:46:02,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e788e7aa4/6e81a9a1e9e74292b9171df014d16733/FLAGa9ef16e6b [2020-10-27 05:46:04,120 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:46:04,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 05:46:04,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e788e7aa4/6e81a9a1e9e74292b9171df014d16733/FLAGa9ef16e6b [2020-10-27 05:46:04,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e788e7aa4/6e81a9a1e9e74292b9171df014d16733 [2020-10-27 05:46:04,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:46:04,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:46:04,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:46:04,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:46:04,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:46:04,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:04" (1/1) ... [2020-10-27 05:46:04,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edfab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:04, skipping insertion in model container [2020-10-27 05:46:04,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:04" (1/1) ... [2020-10-27 05:46:04,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:46:04,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:46:07,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:46:07,454 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:46:08,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:46:08,895 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:46:08,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08 WrapperNode [2020-10-27 05:46:08,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:46:08,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:46:08,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:46:08,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:46:08,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:08,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:09,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:09,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:09,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:09,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:09,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (1/1) ... [2020-10-27 05:46:09,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:46:09,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:46:09,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:46:09,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:46:09,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (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 05:46:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:46:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:46:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:46:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:46:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:46:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:46:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:46:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:46:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:46:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:46:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:46:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:46:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:46:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:46:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:46:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:46:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:46:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:46:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:46:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:46:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:46:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:46:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:46:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:46:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:46:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:46:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:46:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:46:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:46:19,824 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:46:19,825 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:46:19,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:19 BoogieIcfgContainer [2020-10-27 05:46:19,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:46:19,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:46:19,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:46:19,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:46:19,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:46:04" (1/3) ... [2020-10-27 05:46:19,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dcaae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:19, skipping insertion in model container [2020-10-27 05:46:19,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:08" (2/3) ... [2020-10-27 05:46:19,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dcaae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:19, skipping insertion in model container [2020-10-27 05:46:19,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:19" (3/3) ... [2020-10-27 05:46:19,840 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 05:46:19,853 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:46:19,860 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:46:19,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:46:19,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:46:19,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:46:19,924 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:46:19,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:46:19,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:46:19,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:46:19,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:46:19,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:46:19,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states. [2020-10-27 05:46:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 05:46:20,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:46:20,022 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] [2020-10-27 05:46:20,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:46:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:46:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash 44068894, now seen corresponding path program 1 times [2020-10-27 05:46:20,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:46:20,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120686306] [2020-10-27 05:46:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:46:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 05:46:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:46:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 05:46:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:46:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:46:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:46:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:46:40,175 WARN L193 SmtUtils]: Spent 13.71 s on a formula simplification that was a NOOP. DAG size: 1537 [2020-10-27 05:46:40,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:46:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:46:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:46:40,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:46:40,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:46:40,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:46:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 05:46:40,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:46:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:46:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:46:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:46:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:46:40,640 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 05:46:40,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120686306] [2020-10-27 05:46:40,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:46:40,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:46:40,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181875850] [2020-10-27 05:46:40,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:46:40,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:46:40,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:46:40,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:46:40,667 INFO L87 Difference]: Start difference. First operand 2884 states. Second operand 6 states. [2020-10-27 05:46:54,649 WARN L193 SmtUtils]: Spent 13.61 s on a formula simplification that was a NOOP. DAG size: 1543 [2020-10-27 05:47:52,627 WARN L193 SmtUtils]: Spent 13.18 s on a formula simplification that was a NOOP. DAG size: 1542 [2020-10-27 05:47:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:47:54,148 INFO L93 Difference]: Finished difference Result 4301 states and 8074 transitions. [2020-10-27 05:47:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:47:54,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-27 05:47:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:47:54,200 INFO L225 Difference]: With dead ends: 4301 [2020-10-27 05:47:54,200 INFO L226 Difference]: Without dead ends: 2281 [2020-10-27 05:47:54,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:47:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2020-10-27 05:47:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 2278. [2020-10-27 05:47:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2020-10-27 05:47:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2967 transitions. [2020-10-27 05:47:54,438 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2967 transitions. Word has length 84 [2020-10-27 05:47:54,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:47:54,440 INFO L481 AbstractCegarLoop]: Abstraction has 2278 states and 2967 transitions. [2020-10-27 05:47:54,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:47:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2967 transitions. [2020-10-27 05:47:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 05:47:54,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:47:54,454 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] [2020-10-27 05:47:54,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:47:54,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:47:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:47:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash -638803443, now seen corresponding path program 1 times [2020-10-27 05:47:54,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:47:54,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762197028] [2020-10-27 05:47:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:47:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:47:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:56,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:47:59,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:47:59,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 05:47:59,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:47:59,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-27 05:47:59,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:47:59,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:47:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:47:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 05:47:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:13,239 WARN L193 SmtUtils]: Spent 13.11 s on a formula simplification that was a NOOP. DAG size: 1537 [2020-10-27 05:48:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:48:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:48:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:48:13,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:48:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:48:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:48:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 05:48:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:48:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:48:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:48:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:48:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:48:13,647 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 05:48:13,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762197028] [2020-10-27 05:48:13,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:48:13,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:48:13,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095628163] [2020-10-27 05:48:13,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:48:13,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:48:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:48:13,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:48:13,666 INFO L87 Difference]: Start difference. First operand 2278 states and 2967 transitions. Second operand 6 states. [2020-10-27 05:48:27,424 WARN L193 SmtUtils]: Spent 13.47 s on a formula simplification that was a NOOP. DAG size: 1545 [2020-10-27 05:49:03,213 WARN L193 SmtUtils]: Spent 13.62 s on a formula simplification that was a NOOP. DAG size: 1543 [2020-10-27 05:49:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:49:04,933 INFO L93 Difference]: Finished difference Result 3760 states and 5047 transitions. [2020-10-27 05:49:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:49:04,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-27 05:49:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:49:04,949 INFO L225 Difference]: With dead ends: 3760 [2020-10-27 05:49:04,949 INFO L226 Difference]: Without dead ends: 2125 [2020-10-27 05:49:04,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:49:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-10-27 05:49:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2122. [2020-10-27 05:49:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2020-10-27 05:49:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2859 transitions. [2020-10-27 05:49:05,057 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2859 transitions. Word has length 85 [2020-10-27 05:49:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:49:05,057 INFO L481 AbstractCegarLoop]: Abstraction has 2122 states and 2859 transitions. [2020-10-27 05:49:05,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:49:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2859 transitions. [2020-10-27 05:49:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 05:49:05,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:49:05,063 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] [2020-10-27 05:49:05,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:49:05,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:49:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:49:05,064 INFO L82 PathProgramCache]: Analyzing trace with hash -126426333, now seen corresponding path program 1 times [2020-10-27 05:49:05,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:49:05,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313867005] [2020-10-27 05:49:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:49:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:05,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:07,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 05:49:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:49:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 05:49:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:49:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:49:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:49:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:24,396 WARN L193 SmtUtils]: Spent 13.75 s on a formula simplification that was a NOOP. DAG size: 1537 [2020-10-27 05:49:24,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:49:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:49:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:49:24,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:49:24,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:49:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:49:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 05:49:24,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:49:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:49:24,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:49:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:49:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:49:24,784 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 05:49:24,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313867005] [2020-10-27 05:49:24,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:49:24,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:49:24,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676911834] [2020-10-27 05:49:24,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:49:24,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:49:24,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:49:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:49:24,787 INFO L87 Difference]: Start difference. First operand 2122 states and 2859 transitions. Second operand 6 states. [2020-10-27 05:49:39,007 WARN L193 SmtUtils]: Spent 13.93 s on a formula simplification that was a NOOP. DAG size: 1546