/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_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:34:52,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:34:52,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:34:52,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:34:52,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:34:52,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:34:52,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:34:52,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:34:52,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:34:52,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:34:52,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:34:52,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:34:52,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:34:52,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:34:52,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:34:52,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:34:52,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:34:52,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:34:52,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:34:52,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:34:52,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:34:52,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:34:52,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:34:52,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:34:52,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:34:52,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:34:52,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:34:52,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:34:52,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:34:52,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:34:52,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:34:52,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:34:52,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:34:52,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:34:52,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:34:52,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:34:52,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:34:52,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:34:52,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:34:52,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:34:52,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:34:52,851 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 23:34:52,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:34:52,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:34:52,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:34:52,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:34:52,924 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:34:52,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:34:52,925 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:34:52,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:34:52,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:34:52,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:34:52,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:34:52,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:34:52,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:34:52,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:34:52,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:34:52,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:34:52,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:34:52,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:34:52,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:34:52,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:34:52,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:34:52,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:34:52,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:34:52,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:34:52,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:34:52,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:34:52,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:34:52,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:34:52,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:34:52,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:34:53,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:34:53,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:34:53,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:34:53,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:34:53,400 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:34:53,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:34:53,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc012feb6/e77bfcd530e24e61a2f229b4f259f93d/FLAG978770490 [2020-10-27 23:34:54,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:34:54,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:34:54,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc012feb6/e77bfcd530e24e61a2f229b4f259f93d/FLAG978770490 [2020-10-27 23:34:54,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc012feb6/e77bfcd530e24e61a2f229b4f259f93d [2020-10-27 23:34:54,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:34:54,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:34:54,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:34:54,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:34:54,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:34:54,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:34:54" (1/1) ... [2020-10-27 23:34:54,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f45d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:54, skipping insertion in model container [2020-10-27 23:34:54,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:34:54" (1/1) ... [2020-10-27 23:34:54,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:34:54,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:34:55,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:34:55,427 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:34:55,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:34:55,682 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:34:55,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55 WrapperNode [2020-10-27 23:34:55,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:34:55,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:34:55,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:34:55,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:34:55,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (1/1) ... [2020-10-27 23:34:55,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:34:55,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:34:55,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:34:55,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:34:55,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (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 23:34:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:34:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:34:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:34:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:34:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:34:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:34:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:34:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:34:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:34:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:34:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:34:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:34:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:34:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:34:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:34:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:34:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:34:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:34:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:34:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:34:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:34:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:34:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:34:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:34:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:34:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:34:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:34:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:34:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:34:59,408 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:34:59,409 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:34:59,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:34:59 BoogieIcfgContainer [2020-10-27 23:34:59,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:34:59,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:34:59,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:34:59,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:34:59,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:34:54" (1/3) ... [2020-10-27 23:34:59,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf35abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:34:59, skipping insertion in model container [2020-10-27 23:34:59,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:34:55" (2/3) ... [2020-10-27 23:34:59,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf35abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:34:59, skipping insertion in model container [2020-10-27 23:34:59,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:34:59" (3/3) ... [2020-10-27 23:34:59,421 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 23:34:59,433 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:34:59,439 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:34:59,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:34:59,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:34:59,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:34:59,485 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:34:59,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:34:59,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:34:59,486 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:34:59,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:34:59,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:34:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-27 23:34:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-27 23:34:59,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:59,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:59,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2015037424, now seen corresponding path program 1 times [2020-10-27 23:34:59,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:59,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967339493] [2020-10-27 23:34:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 23:35:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:35:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-27 23:35:05,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:35:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-27 23:35:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:35:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:35:07,569 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:35:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:07,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 23:35:07,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:07,774 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 23:35:07,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967339493] [2020-10-27 23:35:07,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:07,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:35:07,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465829666] [2020-10-27 23:35:07,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:35:07,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:07,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:35:07,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:35:07,803 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 8 states. [2020-10-27 23:35:07,989 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-27 23:35:10,325 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 407 [2020-10-27 23:35:20,834 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:35:23,230 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:35:25,537 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:35:27,961 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:35:30,690 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:35:33,133 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:35:35,629 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:35:38,019 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:35:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:38,364 INFO L93 Difference]: Finished difference Result 2675 states and 4631 transitions. [2020-10-27 23:35:38,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 23:35:38,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-27 23:35:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:38,419 INFO L225 Difference]: With dead ends: 2675 [2020-10-27 23:35:38,419 INFO L226 Difference]: Without dead ends: 2437 [2020-10-27 23:35:38,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:35:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-27 23:35:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 906. [2020-10-27 23:35:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-10-27 23:35:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1593 transitions. [2020-10-27 23:35:38,646 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1593 transitions. Word has length 189 [2020-10-27 23:35:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:38,650 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1593 transitions. [2020-10-27 23:35:38,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:35:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1593 transitions. [2020-10-27 23:35:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-27 23:35:38,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:38,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:38,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:35:38,670 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:38,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:38,671 INFO L82 PathProgramCache]: Analyzing trace with hash -236699634, now seen corresponding path program 1 times [2020-10-27 23:35:38,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:38,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527174827] [2020-10-27 23:35:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:43,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 23:35:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:35:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-27 23:35:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:35:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 23:35:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:35:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:46,383 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:35:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:46,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:46,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:46,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:46,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:35:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:46,516 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 23:35:46,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527174827] [2020-10-27 23:35:46,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:46,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 23:35:46,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246757511] [2020-10-27 23:35:46,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 23:35:46,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 23:35:46,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 23:35:46,532 INFO L87 Difference]: Start difference. First operand 906 states and 1593 transitions. Second operand 9 states. [2020-10-27 23:35:49,856 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 409 [2020-10-27 23:36:00,306 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:36:03,220 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:36:06,306 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:36:09,566 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:36:12,816 WARN L193 SmtUtils]: Spent 3.18 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:36:15,951 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:36:19,043 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:36:22,229 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:36:25,604 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:36:29,603 WARN L193 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:36:32,706 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:36:35,931 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:36:40,189 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:36:43,249 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:36:46,395 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:36:46,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:46,432 INFO L93 Difference]: Finished difference Result 6243 states and 10646 transitions. [2020-10-27 23:36:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 23:36:46,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-10-27 23:36:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:46,464 INFO L225 Difference]: With dead ends: 6243 [2020-10-27 23:36:46,464 INFO L226 Difference]: Without dead ends: 5864 [2020-10-27 23:36:46,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 23:36:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5864 states. [2020-10-27 23:36:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5864 to 1953. [2020-10-27 23:36:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2020-10-27 23:36:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3374 transitions. [2020-10-27 23:36:46,697 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3374 transitions. Word has length 190 [2020-10-27 23:36:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:46,699 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 3374 transitions. [2020-10-27 23:36:46,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 23:36:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3374 transitions. [2020-10-27 23:36:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 23:36:46,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:46,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:36:46,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:36:46,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash -801504279, now seen corresponding path program 1 times [2020-10-27 23:36:46,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:46,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964602526] [2020-10-27 23:36:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:51,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:51,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 23:36:51,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:36:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-27 23:36:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:36:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 23:36:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:36:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:54,433 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:36:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:54,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:54,554 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 23:36:54,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964602526] [2020-10-27 23:36:54,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:54,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:36:54,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28702563] [2020-10-27 23:36:54,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:36:54,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:36:54,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:54,557 INFO L87 Difference]: Start difference. First operand 1953 states and 3374 transitions. Second operand 5 states. [2020-10-27 23:36:57,031 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:06,373 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:37:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:06,673 INFO L93 Difference]: Finished difference Result 5870 states and 10035 transitions. [2020-10-27 23:37:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:37:06,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-27 23:37:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:06,699 INFO L225 Difference]: With dead ends: 5870 [2020-10-27 23:37:06,701 INFO L226 Difference]: Without dead ends: 4591 [2020-10-27 23:37:06,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:37:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2020-10-27 23:37:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 3302. [2020-10-27 23:37:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3302 states. [2020-10-27 23:37:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 5667 transitions. [2020-10-27 23:37:07,034 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 5667 transitions. Word has length 191 [2020-10-27 23:37:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:07,035 INFO L481 AbstractCegarLoop]: Abstraction has 3302 states and 5667 transitions. [2020-10-27 23:37:07,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:37:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 5667 transitions. [2020-10-27 23:37:07,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-27 23:37:07,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:07,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:07,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:37:07,041 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:07,041 INFO L82 PathProgramCache]: Analyzing trace with hash -989280377, now seen corresponding path program 1 times [2020-10-27 23:37:07,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:07,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698863733] [2020-10-27 23:37:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:07,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:08,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:12,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 23:37:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:37:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:37:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:37:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-27 23:37:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:37:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:14,502 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:14,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:14,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:14,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:37:14,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:14,613 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 23:37:14,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698863733] [2020-10-27 23:37:14,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:14,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:37:14,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96631967] [2020-10-27 23:37:14,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:37:14,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:14,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:37:14,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:14,616 INFO L87 Difference]: Start difference. First operand 3302 states and 5667 transitions. Second operand 5 states. [2020-10-27 23:37:17,225 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:26,889 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:37:27,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:27,272 INFO L93 Difference]: Finished difference Result 11038 states and 18813 transitions. [2020-10-27 23:37:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:37:27,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-27 23:37:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:27,320 INFO L225 Difference]: With dead ends: 11038 [2020-10-27 23:37:27,320 INFO L226 Difference]: Without dead ends: 8490 [2020-10-27 23:37:27,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:37:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2020-10-27 23:37:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 5925. [2020-10-27 23:37:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5925 states. [2020-10-27 23:37:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 10119 transitions. [2020-10-27 23:37:27,985 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 10119 transitions. Word has length 192 [2020-10-27 23:37:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:27,985 INFO L481 AbstractCegarLoop]: Abstraction has 5925 states and 10119 transitions. [2020-10-27 23:37:27,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:37:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 10119 transitions. [2020-10-27 23:37:27,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 23:37:27,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:27,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:27,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:37:27,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:27,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1920893890, now seen corresponding path program 1 times [2020-10-27 23:37:27,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:27,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17522724] [2020-10-27 23:37:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:28,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:28,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:33,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:33,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 23:37:33,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:37:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 23:37:33,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:37:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 23:37:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:37:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:35,448 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:35,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:35,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:35,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:37:35,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:35,545 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 23:37:35,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17522724] [2020-10-27 23:37:35,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:35,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:37:35,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883921737] [2020-10-27 23:37:35,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:37:35,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:35,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:37:35,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:35,548 INFO L87 Difference]: Start difference. First operand 5925 states and 10119 transitions. Second operand 5 states. [2020-10-27 23:37:37,886 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:37:47,187 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 23:37:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:48,000 INFO L93 Difference]: Finished difference Result 21210 states and 36065 transitions. [2020-10-27 23:37:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:37:48,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-27 23:37:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:48,059 INFO L225 Difference]: With dead ends: 21210 [2020-10-27 23:37:48,059 INFO L226 Difference]: Without dead ends: 16131 [2020-10-27 23:37:48,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:37:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16131 states. [2020-10-27 23:37:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16131 to 11021. [2020-10-27 23:37:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11021 states. [2020-10-27 23:37:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 18755 transitions. [2020-10-27 23:37:49,026 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 18755 transitions. Word has length 193 [2020-10-27 23:37:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:49,027 INFO L481 AbstractCegarLoop]: Abstraction has 11021 states and 18755 transitions. [2020-10-27 23:37:49,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:37:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 18755 transitions. [2020-10-27 23:37:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 23:37:49,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:49,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:49,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:37:49,034 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:49,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1391718589, now seen corresponding path program 1 times [2020-10-27 23:37:49,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:49,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344326187] [2020-10-27 23:37:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:49,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:50,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:54,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:54,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 23:37:54,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:37:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:37:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:37:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 23:37:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:37:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:56,596 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:37:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:56,683 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 23:37:56,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344326187] [2020-10-27 23:37:56,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:56,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:37:56,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649894540] [2020-10-27 23:37:56,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:37:56,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:56,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:37:56,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:37:56,686 INFO L87 Difference]: Start difference. First operand 11021 states and 18755 transitions. Second operand 4 states. [2020-10-27 23:37:59,150 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:08,078 INFO L93 Difference]: Finished difference Result 29604 states and 50264 transitions. [2020-10-27 23:38:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:38:08,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-27 23:38:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:08,138 INFO L225 Difference]: With dead ends: 29604 [2020-10-27 23:38:08,138 INFO L226 Difference]: Without dead ends: 19167 [2020-10-27 23:38:08,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19167 states. [2020-10-27 23:38:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19167 to 19164. [2020-10-27 23:38:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19164 states. [2020-10-27 23:38:09,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19164 states to 19164 states and 32491 transitions. [2020-10-27 23:38:09,545 INFO L78 Accepts]: Start accepts. Automaton has 19164 states and 32491 transitions. Word has length 194 [2020-10-27 23:38:09,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:09,546 INFO L481 AbstractCegarLoop]: Abstraction has 19164 states and 32491 transitions. [2020-10-27 23:38:09,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:38:09,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19164 states and 32491 transitions. [2020-10-27 23:38:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 23:38:09,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:09,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:09,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:38:09,552 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:09,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1513720927, now seen corresponding path program 1 times [2020-10-27 23:38:09,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:09,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710244891] [2020-10-27 23:38:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:10,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:14,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:14,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 23:38:14,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:38:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-27 23:38:14,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:38:14,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-27 23:38:14,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:38:14,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:16,981 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:17,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:38:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:17,051 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 23:38:17,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710244891] [2020-10-27 23:38:17,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:17,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:38:17,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576418333] [2020-10-27 23:38:17,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:38:17,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:17,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:38:17,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:38:17,054 INFO L87 Difference]: Start difference. First operand 19164 states and 32491 transitions. Second operand 4 states. [2020-10-27 23:38:19,603 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 401 [2020-10-27 23:38:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:38:29,612 INFO L93 Difference]: Finished difference Result 52443 states and 88806 transitions. [2020-10-27 23:38:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:38:29,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2020-10-27 23:38:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:38:29,695 INFO L225 Difference]: With dead ends: 52443 [2020-10-27 23:38:29,695 INFO L226 Difference]: Without dead ends: 33886 [2020-10-27 23:38:29,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:38:29,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33886 states. [2020-10-27 23:38:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33886 to 33883. [2020-10-27 23:38:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33883 states. [2020-10-27 23:38:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33883 states to 33883 states and 57277 transitions. [2020-10-27 23:38:32,373 INFO L78 Accepts]: Start accepts. Automaton has 33883 states and 57277 transitions. Word has length 194 [2020-10-27 23:38:32,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:38:32,373 INFO L481 AbstractCegarLoop]: Abstraction has 33883 states and 57277 transitions. [2020-10-27 23:38:32,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:38:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 33883 states and 57277 transitions. [2020-10-27 23:38:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 23:38:32,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:38:32,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:38:32,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:38:32,378 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:38:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:38:32,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2097504765, now seen corresponding path program 1 times [2020-10-27 23:38:32,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:38:32,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054072572] [2020-10-27 23:38:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:38:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:32,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:36,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:38:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:39,726 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 23:38:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:38:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:38:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:38:39,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:38:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:38:39,802 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 23:38:39,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054072572] [2020-10-27 23:38:39,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:38:39,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:38:39,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548166034] [2020-10-27 23:38:39,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:38:39,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:38:39,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:38:39,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:38:39,805 INFO L87 Difference]: Start difference. First operand 33883 states and 57277 transitions. Second operand 4 states.