/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=DEEPEST --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.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:49:20,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:49:20,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:49:20,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:49:20,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:49:20,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:49:20,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:49:20,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:49:20,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:49:20,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:49:20,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:49:20,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:49:20,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:49:20,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:49:20,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:49:20,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:49:20,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:49:20,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:49:20,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:49:20,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:49:20,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:49:20,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:49:20,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:49:20,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:49:20,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:49:20,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:49:20,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:49:20,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:49:20,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:49:20,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:49:20,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:49:20,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:49:20,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:49:20,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:49:20,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:49:20,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:49:20,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:49:20,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:49:20,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:49:20,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:49:20,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:49:20,352 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 23:49:20,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:49:20,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:49:20,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:49:20,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:49:20,409 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:49:20,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:49:20,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:49:20,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:49:20,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:49:20,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:49:20,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:49:20,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:49:20,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:49:20,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:49:20,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:49:20,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:49:20,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:49:20,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:49:20,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:49:20,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:49:20,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:49:20,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:49:20,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:49:20,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:49:20,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:49:20,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:49:20,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:49:20,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:49:20,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:49:20,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:49:20,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:49:20,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:49:20,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:49:20,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:49:20,839 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:49:20,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 23:49:20,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26892244d/5db1e6cb68fb47e5ac0452ebddb6cbd3/FLAG5bff25d20 [2020-10-27 23:49:21,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:49:21,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 23:49:21,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26892244d/5db1e6cb68fb47e5ac0452ebddb6cbd3/FLAG5bff25d20 [2020-10-27 23:49:21,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26892244d/5db1e6cb68fb47e5ac0452ebddb6cbd3 [2020-10-27 23:49:21,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:49:21,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:49:21,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:49:21,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:49:21,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:49:21,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:49:21" (1/1) ... [2020-10-27 23:49:21,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1d177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:21, skipping insertion in model container [2020-10-27 23:49:21,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:49:21" (1/1) ... [2020-10-27 23:49:21,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:49:22,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:49:23,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:49:23,212 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:49:23,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:49:23,658 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:49:23,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23 WrapperNode [2020-10-27 23:49:23,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:49:23,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:49:23,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:49:23,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:49:23,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (1/1) ... [2020-10-27 23:49:23,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:49:23,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:49:23,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:49:23,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:49:23,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (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 23:49:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:49:24,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:49:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:49:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:49:24,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:49:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:49:24,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:49:24,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:49:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:49:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:49:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:49:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:49:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:49:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:49:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:49:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:49:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:49:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:49:27,655 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:49:27,656 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:49:27,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:49:27 BoogieIcfgContainer [2020-10-27 23:49:27,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:49:27,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:49:27,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:49:27,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:49:27,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:49:21" (1/3) ... [2020-10-27 23:49:27,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c73a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:49:27, skipping insertion in model container [2020-10-27 23:49:27,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:49:23" (2/3) ... [2020-10-27 23:49:27,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c73a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:49:27, skipping insertion in model container [2020-10-27 23:49:27,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:49:27" (3/3) ... [2020-10-27 23:49:27,671 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 23:49:27,684 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:49:27,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:49:27,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:49:27,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:49:27,769 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:49:27,769 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:49:27,769 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:49:27,769 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:49:27,769 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:49:27,770 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:49:27,770 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:49:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2020-10-27 23:49:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:49:27,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:27,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:49:27,890 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1604528589, now seen corresponding path program 1 times [2020-10-27 23:49:27,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:27,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289760807] [2020-10-27 23:49:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:33,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:33,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:49:33,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:33,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:49:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:49:33,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:49:33,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:49:34,378 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:49:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:34,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 23:49:34,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:49:34,487 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 23:49:34,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289760807] [2020-10-27 23:49:34,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:34,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:34,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660649706] [2020-10-27 23:49:34,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:34,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:34,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:34,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:34,522 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 7 states. [2020-10-27 23:49:35,472 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:49:44,579 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:49:45,552 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:49:46,884 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:49:47,873 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:49:49,444 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:49:50,305 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:49:51,382 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:49:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:51,425 INFO L93 Difference]: Finished difference Result 2294 states and 3945 transitions. [2020-10-27 23:49:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:49:51,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:49:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:51,460 INFO L225 Difference]: With dead ends: 2294 [2020-10-27 23:49:51,461 INFO L226 Difference]: Without dead ends: 1949 [2020-10-27 23:49:51,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:49:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-27 23:49:51,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1243. [2020-10-27 23:49:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-10-27 23:49:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1648 transitions. [2020-10-27 23:49:51,674 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1648 transitions. Word has length 77 [2020-10-27 23:49:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:51,675 INFO L481 AbstractCegarLoop]: Abstraction has 1243 states and 1648 transitions. [2020-10-27 23:49:51,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:49:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1648 transitions. [2020-10-27 23:49:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:49:51,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:51,692 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] [2020-10-27 23:49:51,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:49:51,692 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash -377641865, now seen corresponding path program 1 times [2020-10-27 23:49:51,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:51,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441561568] [2020-10-27 23:49:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:56,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:49:56,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:49:56,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:49:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:49:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:49:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:57,619 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:49:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:57,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:57,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:57,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:49:57,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:57,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:57,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:57,681 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 23:49:57,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441561568] [2020-10-27 23:49:57,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:57,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:49:57,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622567893] [2020-10-27 23:49:57,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:49:57,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:57,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:49:57,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:49:57,685 INFO L87 Difference]: Start difference. First operand 1243 states and 1648 transitions. Second operand 7 states. [2020-10-27 23:49:58,485 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:04,984 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:50:06,001 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:07,081 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:50:07,916 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:50:09,633 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:10,493 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:50:11,474 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:50:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:11,504 INFO L93 Difference]: Finished difference Result 3388 states and 4733 transitions. [2020-10-27 23:50:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:50:11,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:50:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:11,521 INFO L225 Difference]: With dead ends: 3388 [2020-10-27 23:50:11,521 INFO L226 Difference]: Without dead ends: 3092 [2020-10-27 23:50:11,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:50:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-10-27 23:50:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 1663. [2020-10-27 23:50:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1663 states. [2020-10-27 23:50:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2286 transitions. [2020-10-27 23:50:11,641 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2286 transitions. Word has length 77 [2020-10-27 23:50:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:11,642 INFO L481 AbstractCegarLoop]: Abstraction has 1663 states and 2286 transitions. [2020-10-27 23:50:11,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:50:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2286 transitions. [2020-10-27 23:50:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:50:11,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:11,648 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] [2020-10-27 23:50:11,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:50:11,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2002512183, now seen corresponding path program 1 times [2020-10-27 23:50:11,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:11,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930762962] [2020-10-27 23:50:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:16,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:16,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:50:16,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:50:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5183 [2020-10-27 23:50:16,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:50:16,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:50:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 23:50:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:17,773 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:50:17,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:17,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:17,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:17,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 23:50:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:17,862 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 23:50:17,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930762962] [2020-10-27 23:50:17,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:17,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:50:17,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952217889] [2020-10-27 23:50:17,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:50:17,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:17,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:50:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:17,865 INFO L87 Difference]: Start difference. First operand 1663 states and 2286 transitions. Second operand 6 states. [2020-10-27 23:50:18,788 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:50:24,289 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:50:25,526 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:50:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:26,477 INFO L93 Difference]: Finished difference Result 2667 states and 3748 transitions. [2020-10-27 23:50:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:50:26,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-27 23:50:26,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:26,490 INFO L225 Difference]: With dead ends: 2667 [2020-10-27 23:50:26,490 INFO L226 Difference]: Without dead ends: 2409 [2020-10-27 23:50:26,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:50:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-10-27 23:50:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2070. [2020-10-27 23:50:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-27 23:50:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2899 transitions. [2020-10-27 23:50:26,614 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2899 transitions. Word has length 77 [2020-10-27 23:50:26,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:26,614 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2899 transitions. [2020-10-27 23:50:26,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:50:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2899 transitions. [2020-10-27 23:50:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:50:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:26,620 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] [2020-10-27 23:50:26,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:50:26,620 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash 933010525, now seen corresponding path program 1 times [2020-10-27 23:50:26,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:26,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050008764] [2020-10-27 23:50:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:30,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:31,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:50:31,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:50:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 23:50:31,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:50:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:50:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:50:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:32,723 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:50:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:32,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:32,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:50:32,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:32,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:32,791 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 23:50:32,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050008764] [2020-10-27 23:50:32,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:32,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:50:32,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857605474] [2020-10-27 23:50:32,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:50:32,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:50:32,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:50:32,795 INFO L87 Difference]: Start difference. First operand 2070 states and 2899 transitions. Second operand 7 states. [2020-10-27 23:50:33,723 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:40,285 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:50:41,357 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:42,573 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:50:43,417 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:50:45,193 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:50:46,065 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:47,220 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:50:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:47,304 INFO L93 Difference]: Finished difference Result 9227 states and 13695 transitions. [2020-10-27 23:50:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:50:47,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:50:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:47,347 INFO L225 Difference]: With dead ends: 9227 [2020-10-27 23:50:47,347 INFO L226 Difference]: Without dead ends: 8242 [2020-10-27 23:50:47,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:50:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8242 states. [2020-10-27 23:50:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8242 to 4009. [2020-10-27 23:50:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4009 states. [2020-10-27 23:50:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 5809 transitions. [2020-10-27 23:50:47,636 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 5809 transitions. Word has length 77 [2020-10-27 23:50:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:47,636 INFO L481 AbstractCegarLoop]: Abstraction has 4009 states and 5809 transitions. [2020-10-27 23:50:47,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:50:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 5809 transitions. [2020-10-27 23:50:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:50:47,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:47,642 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] [2020-10-27 23:50:47,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:50:47,642 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:47,643 INFO L82 PathProgramCache]: Analyzing trace with hash 102977579, now seen corresponding path program 1 times [2020-10-27 23:50:47,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:47,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175949609] [2020-10-27 23:50:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:48,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:48,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:50,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:50:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:50:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:50:52,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:50:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:50:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:50:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:53,493 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:50:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:53,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:53,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:53,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:50:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:53,553 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 23:50:53,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175949609] [2020-10-27 23:50:53,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:53,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:50:53,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419010543] [2020-10-27 23:50:53,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:50:53,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:53,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:50:53,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:50:53,556 INFO L87 Difference]: Start difference. First operand 4009 states and 5809 transitions. Second operand 7 states. [2020-10-27 23:50:54,413 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:50:59,780 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:51:00,683 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:01,830 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:51:02,669 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:51:04,554 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:05,414 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:51:06,542 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:51:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:06,584 INFO L93 Difference]: Finished difference Result 11114 states and 16622 transitions. [2020-10-27 23:51:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:51:06,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:51:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:06,630 INFO L225 Difference]: With dead ends: 11114 [2020-10-27 23:51:06,631 INFO L226 Difference]: Without dead ends: 9791 [2020-10-27 23:51:06,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:51:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9791 states. [2020-10-27 23:51:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9791 to 4746. [2020-10-27 23:51:07,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4746 states. [2020-10-27 23:51:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4746 states to 4746 states and 6957 transitions. [2020-10-27 23:51:07,035 INFO L78 Accepts]: Start accepts. Automaton has 4746 states and 6957 transitions. Word has length 77 [2020-10-27 23:51:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:07,036 INFO L481 AbstractCegarLoop]: Abstraction has 4746 states and 6957 transitions. [2020-10-27 23:51:07,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:51:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4746 states and 6957 transitions. [2020-10-27 23:51:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:51:07,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:07,049 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] [2020-10-27 23:51:07,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:51:07,049 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:07,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:07,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1849944932, now seen corresponding path program 1 times [2020-10-27 23:51:07,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:07,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235969463] [2020-10-27 23:51:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:12,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:51:12,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:51:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:51:12,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:51:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:51:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:51:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:13,031 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:51:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:13,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:13,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:13,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:51:13,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:13,089 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 23:51:13,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235969463] [2020-10-27 23:51:13,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:13,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:51:13,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146955953] [2020-10-27 23:51:13,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:51:13,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:51:13,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:51:13,092 INFO L87 Difference]: Start difference. First operand 4746 states and 6957 transitions. Second operand 7 states. [2020-10-27 23:51:14,029 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:20,210 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:51:21,193 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:22,228 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:51:23,070 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:51:25,024 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:25,875 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:51:27,214 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:51:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:27,343 INFO L93 Difference]: Finished difference Result 18242 states and 27903 transitions. [2020-10-27 23:51:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:51:27,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:51:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:27,383 INFO L225 Difference]: With dead ends: 18242 [2020-10-27 23:51:27,383 INFO L226 Difference]: Without dead ends: 15956 [2020-10-27 23:51:27,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:51:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2020-10-27 23:51:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 6078. [2020-10-27 23:51:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6078 states. [2020-10-27 23:51:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6078 states to 6078 states and 9034 transitions. [2020-10-27 23:51:27,875 INFO L78 Accepts]: Start accepts. Automaton has 6078 states and 9034 transitions. Word has length 78 [2020-10-27 23:51:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:27,875 INFO L481 AbstractCegarLoop]: Abstraction has 6078 states and 9034 transitions. [2020-10-27 23:51:27,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:51:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 6078 states and 9034 transitions. [2020-10-27 23:51:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:51:27,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:27,881 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] [2020-10-27 23:51:27,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:51:27,881 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1878799259, now seen corresponding path program 1 times [2020-10-27 23:51:27,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:27,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648750507] [2020-10-27 23:51:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:29,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:51:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:51:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:33,795 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:51:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:33,842 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 23:51:33,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648750507] [2020-10-27 23:51:33,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:33,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:51:33,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232229206] [2020-10-27 23:51:33,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:51:33,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:33,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:51:33,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:51:33,844 INFO L87 Difference]: Start difference. First operand 6078 states and 9034 transitions. Second operand 7 states. [2020-10-27 23:51:34,762 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:40,475 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:41,490 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:51:42,578 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:51:43,532 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:51:45,890 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:51:46,791 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:51:48,191 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:51:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:48,322 INFO L93 Difference]: Finished difference Result 22773 states and 34624 transitions. [2020-10-27 23:51:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:51:48,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:51:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:48,369 INFO L225 Difference]: With dead ends: 22773 [2020-10-27 23:51:48,369 INFO L226 Difference]: Without dead ends: 19916 [2020-10-27 23:51:48,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:51:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19916 states. [2020-10-27 23:51:49,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19916 to 9569. [2020-10-27 23:51:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9569 states. [2020-10-27 23:51:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9569 states to 9569 states and 14254 transitions. [2020-10-27 23:51:49,107 INFO L78 Accepts]: Start accepts. Automaton has 9569 states and 14254 transitions. Word has length 78 [2020-10-27 23:51:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:49,107 INFO L481 AbstractCegarLoop]: Abstraction has 9569 states and 14254 transitions. [2020-10-27 23:51:49,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:51:49,107 INFO L276 IsEmpty]: Start isEmpty. Operand 9569 states and 14254 transitions. [2020-10-27 23:51:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:51:49,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:49,114 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] [2020-10-27 23:51:49,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:51:49,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:49,114 INFO L82 PathProgramCache]: Analyzing trace with hash 266521583, now seen corresponding path program 1 times [2020-10-27 23:51:49,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:49,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800025734] [2020-10-27 23:51:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:49,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:54,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:51:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:51:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:51:54,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:51:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:51:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:51:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:55,109 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:51:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:55,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:55,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:55,148 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 23:51:55,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800025734] [2020-10-27 23:51:55,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:55,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:51:55,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631640683] [2020-10-27 23:51:55,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:51:55,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:55,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:51:55,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:51:55,150 INFO L87 Difference]: Start difference. First operand 9569 states and 14254 transitions. Second operand 7 states. [2020-10-27 23:51:56,111 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:01,342 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:02,302 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:52:03,443 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:04,380 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:52:06,438 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:52:07,316 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:08,830 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:52:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:52:08,972 INFO L93 Difference]: Finished difference Result 19613 states and 29631 transitions. [2020-10-27 23:52:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:52:08,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:52:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:52:09,011 INFO L225 Difference]: With dead ends: 19613 [2020-10-27 23:52:09,011 INFO L226 Difference]: Without dead ends: 16091 [2020-10-27 23:52:09,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:52:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16091 states. [2020-10-27 23:52:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16091 to 8476. [2020-10-27 23:52:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8476 states. [2020-10-27 23:52:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 12602 transitions. [2020-10-27 23:52:09,756 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 12602 transitions. Word has length 78 [2020-10-27 23:52:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:09,757 INFO L481 AbstractCegarLoop]: Abstraction has 8476 states and 12602 transitions. [2020-10-27 23:52:09,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:52:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 12602 transitions. [2020-10-27 23:52:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:52:09,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:09,762 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] [2020-10-27 23:52:09,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:52:09,763 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash -398962054, now seen corresponding path program 1 times [2020-10-27 23:52:09,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:09,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710201997] [2020-10-27 23:52:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:13,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:52:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:52:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:15,743 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:15,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:15,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:15,785 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 23:52:15,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710201997] [2020-10-27 23:52:15,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:15,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:15,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987158081] [2020-10-27 23:52:15,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:15,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:15,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:15,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:15,788 INFO L87 Difference]: Start difference. First operand 8476 states and 12602 transitions. Second operand 7 states. [2020-10-27 23:52:16,716 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:22,489 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:23,380 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:52:24,511 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:25,416 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:52:27,744 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:28,677 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:52:30,179 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:52:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:52:30,293 INFO L93 Difference]: Finished difference Result 17202 states and 25965 transitions. [2020-10-27 23:52:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:52:30,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:52:30,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:52:30,323 INFO L225 Difference]: With dead ends: 17202 [2020-10-27 23:52:30,323 INFO L226 Difference]: Without dead ends: 13718 [2020-10-27 23:52:30,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:52:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13718 states. [2020-10-27 23:52:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13718 to 7395. [2020-10-27 23:52:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7395 states. [2020-10-27 23:52:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7395 states to 7395 states and 10973 transitions. [2020-10-27 23:52:31,007 INFO L78 Accepts]: Start accepts. Automaton has 7395 states and 10973 transitions. Word has length 78 [2020-10-27 23:52:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:31,008 INFO L481 AbstractCegarLoop]: Abstraction has 7395 states and 10973 transitions. [2020-10-27 23:52:31,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:52:31,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7395 states and 10973 transitions. [2020-10-27 23:52:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:52:31,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:31,013 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] [2020-10-27 23:52:31,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:52:31,013 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1447905170, now seen corresponding path program 1 times [2020-10-27 23:52:31,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:31,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068932611] [2020-10-27 23:52:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:52:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:36,940 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:36,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:36,991 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 23:52:36,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068932611] [2020-10-27 23:52:36,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:36,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:36,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396343673] [2020-10-27 23:52:36,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:36,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:36,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:36,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:36,993 INFO L87 Difference]: Start difference. First operand 7395 states and 10973 transitions. Second operand 7 states. [2020-10-27 23:52:37,936 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:43,446 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:52:44,466 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:45,506 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:52:46,333 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:48,550 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:49,409 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:52:50,866 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:52:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:52:51,082 INFO L93 Difference]: Finished difference Result 17619 states and 26652 transitions. [2020-10-27 23:52:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:52:51,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:52:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:52:51,104 INFO L225 Difference]: With dead ends: 17619 [2020-10-27 23:52:51,104 INFO L226 Difference]: Without dead ends: 15299 [2020-10-27 23:52:51,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:52:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15299 states. [2020-10-27 23:52:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15299 to 7089. [2020-10-27 23:52:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7089 states. [2020-10-27 23:52:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10512 transitions. [2020-10-27 23:52:51,692 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10512 transitions. Word has length 78 [2020-10-27 23:52:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:51,692 INFO L481 AbstractCegarLoop]: Abstraction has 7089 states and 10512 transitions. [2020-10-27 23:52:51,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:52:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10512 transitions. [2020-10-27 23:52:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:52:51,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:51,696 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] [2020-10-27 23:52:51,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:52:51,697 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1176551735, now seen corresponding path program 1 times [2020-10-27 23:52:51,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:51,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844247228] [2020-10-27 23:52:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:53,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:53,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:56,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:52:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:57,622 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:57,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:57,662 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 23:52:57,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844247228] [2020-10-27 23:52:57,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:57,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:57,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659109327] [2020-10-27 23:52:57,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:57,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:57,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:57,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:57,664 INFO L87 Difference]: Start difference. First operand 7089 states and 10512 transitions. Second operand 7 states. [2020-10-27 23:52:58,609 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 335