/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:04:37,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:04:37,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:04:37,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:04:37,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:04:37,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:04:37,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:04:37,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:04:37,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:04:37,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:04:37,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:04:37,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:04:37,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:04:37,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:04:37,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:04:37,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:04:37,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:04:37,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:04:37,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:04:37,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:04:37,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:04:37,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:04:37,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:04:37,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:04:37,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:04:37,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:04:37,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:04:37,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:04:37,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:04:37,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:04:37,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:04:37,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:04:37,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:04:37,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:04:37,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:04:37,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:04:37,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:04:37,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:04:37,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:04:37,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:04:37,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:04:37,844 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 06:04:37,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:04:37,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:04:37,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:04:37,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:04:37,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:04:37,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:04:37,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:04:37,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:04:37,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:04:37,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:04:37,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:04:37,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:04:37,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:04:37,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:04:37,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:04:37,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:04:37,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:04:37,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:04:37,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:04:37,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:04:37,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:04:37,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:04:37,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:04:37,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:04:37,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:04:37,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:04:37,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:04:37,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:04:37,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:04:37,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:04:38,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:04:38,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:04:38,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:04:38,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:04:38,301 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:04:38,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 06:04:38,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14f7ad99/d7802df7271d4a8a8858d68e2329eed2/FLAG14884e5c1 [2020-10-27 06:04:39,091 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:04:39,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 06:04:39,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14f7ad99/d7802df7271d4a8a8858d68e2329eed2/FLAG14884e5c1 [2020-10-27 06:04:39,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f14f7ad99/d7802df7271d4a8a8858d68e2329eed2 [2020-10-27 06:04:39,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:04:39,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:04:39,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:04:39,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:04:39,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:04:39,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:39" (1/1) ... [2020-10-27 06:04:39,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6bd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:39, skipping insertion in model container [2020-10-27 06:04:39,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:39" (1/1) ... [2020-10-27 06:04:39,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:04:39,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:04:39,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:04:39,864 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:04:40,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:04:40,114 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:04:40,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40 WrapperNode [2020-10-27 06:04:40,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:04:40,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:04:40,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:04:40,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:04:40,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (1/1) ... [2020-10-27 06:04:40,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:04:40,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:04:40,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:04:40,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:04:40,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (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 06:04:40,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:04:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:04:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:04:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:04:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:04:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:04:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:04:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:04:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:04:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:04:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:04:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:04:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:04:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:04:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:04:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:04:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:04:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:04:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:04:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:04:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:04:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:04:40,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:04:41,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:04:41,873 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:04:41,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:41 BoogieIcfgContainer [2020-10-27 06:04:41,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:04:41,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:04:41,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:04:41,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:04:41,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:04:39" (1/3) ... [2020-10-27 06:04:41,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f636d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:41, skipping insertion in model container [2020-10-27 06:04:41,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:40" (2/3) ... [2020-10-27 06:04:41,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f636d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:41, skipping insertion in model container [2020-10-27 06:04:41,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:41" (3/3) ... [2020-10-27 06:04:41,884 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 06:04:41,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:04:41,901 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:04:41,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:04:41,940 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:04:41,940 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:04:41,940 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:04:41,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:04:41,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:04:41,941 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:04:41,941 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:04:41,941 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:04:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-27 06:04:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 06:04:41,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:41,984 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] [2020-10-27 06:04:41,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash -561736880, now seen corresponding path program 1 times [2020-10-27 06:04:42,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:42,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86298226] [2020-10-27 06:04:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:42,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:44,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 06:04:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:04:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 06:04:47,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:04:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 06:04:47,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:04:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:04:48,415 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:04:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:04:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:48,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:48,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:04:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:04:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 06:04:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:04:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:04:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:04:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:04:48,550 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 06:04:48,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86298226] [2020-10-27 06:04:48,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:04:48,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:04:48,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281827896] [2020-10-27 06:04:48,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:04:48,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:04:48,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:04:48,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:04:48,587 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 4 states. [2020-10-27 06:04:49,426 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-27 06:04:52,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:04:52,117 INFO L93 Difference]: Finished difference Result 665 states and 1139 transitions. [2020-10-27 06:04:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:04:52,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 06:04:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:04:52,137 INFO L225 Difference]: With dead ends: 665 [2020-10-27 06:04:52,137 INFO L226 Difference]: Without dead ends: 495 [2020-10-27 06:04:52,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:04:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-27 06:04:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 491. [2020-10-27 06:04:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-27 06:04:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 806 transitions. [2020-10-27 06:04:52,233 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 806 transitions. Word has length 123 [2020-10-27 06:04:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:04:52,234 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 806 transitions. [2020-10-27 06:04:52,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:04:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 806 transitions. [2020-10-27 06:04:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 06:04:52,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:52,240 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] [2020-10-27 06:04:52,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:04:52,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -948532054, now seen corresponding path program 1 times [2020-10-27 06:04:52,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:52,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428902416] [2020-10-27 06:04:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:52,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:57,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 06:04:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:04:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 06:04:57,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:04:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:04:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 06:04:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:04:58,114 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:04:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:04:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:58,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:58,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:04:58,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:04:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:04:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:04:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:04:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:04:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:04:58,259 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 06:04:58,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428902416] [2020-10-27 06:04:58,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:04:58,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:04:58,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568371199] [2020-10-27 06:04:58,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:04:58,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:04:58,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:04:58,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:04:58,265 INFO L87 Difference]: Start difference. First operand 491 states and 806 transitions. Second operand 5 states. [2020-10-27 06:05:01,219 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:05:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:01,401 INFO L93 Difference]: Finished difference Result 1428 states and 2345 transitions. [2020-10-27 06:05:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:01,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 06:05:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:01,419 INFO L225 Difference]: With dead ends: 1428 [2020-10-27 06:05:01,420 INFO L226 Difference]: Without dead ends: 954 [2020-10-27 06:05:01,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-27 06:05:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 951. [2020-10-27 06:05:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-10-27 06:05:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1554 transitions. [2020-10-27 06:05:01,499 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1554 transitions. Word has length 126 [2020-10-27 06:05:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:01,500 INFO L481 AbstractCegarLoop]: Abstraction has 951 states and 1554 transitions. [2020-10-27 06:05:01,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1554 transitions. [2020-10-27 06:05:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 06:05:01,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:01,504 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] [2020-10-27 06:05:01,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:05:01,504 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:01,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1607040979, now seen corresponding path program 1 times [2020-10-27 06:05:01,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:01,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635392150] [2020-10-27 06:05:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:05,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:06,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:06,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 06:05:06,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:05:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 06:05:06,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 06:05:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:07,476 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:05:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:07,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:07,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:07,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 06:05:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:07,600 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 06:05:07,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635392150] [2020-10-27 06:05:07,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:07,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:07,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678283536] [2020-10-27 06:05:07,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:07,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:07,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:07,605 INFO L87 Difference]: Start difference. First operand 951 states and 1554 transitions. Second operand 5 states. [2020-10-27 06:05:10,902 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:05:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:11,075 INFO L93 Difference]: Finished difference Result 2726 states and 4446 transitions. [2020-10-27 06:05:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:11,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 06:05:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:11,088 INFO L225 Difference]: With dead ends: 2726 [2020-10-27 06:05:11,088 INFO L226 Difference]: Without dead ends: 1861 [2020-10-27 06:05:11,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-10-27 06:05:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1858. [2020-10-27 06:05:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-10-27 06:05:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 3023 transitions. [2020-10-27 06:05:11,234 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 3023 transitions. Word has length 127 [2020-10-27 06:05:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:11,235 INFO L481 AbstractCegarLoop]: Abstraction has 1858 states and 3023 transitions. [2020-10-27 06:05:11,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 3023 transitions. [2020-10-27 06:05:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 06:05:11,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:11,241 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] [2020-10-27 06:05:11,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:05:11,241 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1218512964, now seen corresponding path program 1 times [2020-10-27 06:05:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:11,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508327913] [2020-10-27 06:05:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:16,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 06:05:16,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:05:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 06:05:16,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 06:05:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:17,089 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:05:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:17,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:05:17,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:17,191 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 06:05:17,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508327913] [2020-10-27 06:05:17,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:17,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:17,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697998585] [2020-10-27 06:05:17,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:17,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:17,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:17,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:17,195 INFO L87 Difference]: Start difference. First operand 1858 states and 3023 transitions. Second operand 5 states. [2020-10-27 06:05:20,110 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:05:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:20,295 INFO L93 Difference]: Finished difference Result 5482 states and 8921 transitions. [2020-10-27 06:05:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:20,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 06:05:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:20,317 INFO L225 Difference]: With dead ends: 5482 [2020-10-27 06:05:20,317 INFO L226 Difference]: Without dead ends: 3642 [2020-10-27 06:05:20,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2020-10-27 06:05:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 3639. [2020-10-27 06:05:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-10-27 06:05:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5887 transitions. [2020-10-27 06:05:20,564 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5887 transitions. Word has length 128 [2020-10-27 06:05:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:20,565 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5887 transitions. [2020-10-27 06:05:20,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5887 transitions. [2020-10-27 06:05:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 06:05:20,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:20,574 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] [2020-10-27 06:05:20,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:05:20,575 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash -419086572, now seen corresponding path program 1 times [2020-10-27 06:05:20,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:20,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467858794] [2020-10-27 06:05:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 06:05:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 06:05:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:26,306 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:05:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:26,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:26,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:26,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:05:26,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:26,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:26,382 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 06:05:26,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467858794] [2020-10-27 06:05:26,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:26,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:05:26,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861704070] [2020-10-27 06:05:26,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:05:26,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:26,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:05:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:05:26,385 INFO L87 Difference]: Start difference. First operand 3639 states and 5887 transitions. Second operand 4 states. [2020-10-27 06:05:27,072 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-27 06:05:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:29,340 INFO L93 Difference]: Finished difference Result 7861 states and 12843 transitions. [2020-10-27 06:05:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:05:29,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-27 06:05:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:29,373 INFO L225 Difference]: With dead ends: 7861 [2020-10-27 06:05:29,373 INFO L226 Difference]: Without dead ends: 5674 [2020-10-27 06:05:29,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2020-10-27 06:05:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5655. [2020-10-27 06:05:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5655 states. [2020-10-27 06:05:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 9183 transitions. [2020-10-27 06:05:29,730 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 9183 transitions. Word has length 129 [2020-10-27 06:05:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:29,730 INFO L481 AbstractCegarLoop]: Abstraction has 5655 states and 9183 transitions. [2020-10-27 06:05:29,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:05:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 9183 transitions. [2020-10-27 06:05:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 06:05:29,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:29,741 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] [2020-10-27 06:05:29,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:05:29,741 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1101246301, now seen corresponding path program 1 times [2020-10-27 06:05:29,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:29,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34167536] [2020-10-27 06:05:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:34,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:34,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 06:05:34,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:05:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:05:34,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:05:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:35,586 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:05:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:35,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:35,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:05:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:35,714 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 06:05:35,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34167536] [2020-10-27 06:05:35,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:35,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:35,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566495942] [2020-10-27 06:05:35,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:35,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:35,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:35,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:35,716 INFO L87 Difference]: Start difference. First operand 5655 states and 9183 transitions. Second operand 5 states. [2020-10-27 06:05:39,120 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:05:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:39,551 INFO L93 Difference]: Finished difference Result 16319 states and 26445 transitions. [2020-10-27 06:05:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:39,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-27 06:05:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:39,602 INFO L225 Difference]: With dead ends: 16319 [2020-10-27 06:05:39,602 INFO L226 Difference]: Without dead ends: 11012 [2020-10-27 06:05:39,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11012 states. [2020-10-27 06:05:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11012 to 11009. [2020-10-27 06:05:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11009 states. [2020-10-27 06:05:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11009 states to 11009 states and 17777 transitions. [2020-10-27 06:05:40,450 INFO L78 Accepts]: Start accepts. Automaton has 11009 states and 17777 transitions. Word has length 132 [2020-10-27 06:05:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:40,451 INFO L481 AbstractCegarLoop]: Abstraction has 11009 states and 17777 transitions. [2020-10-27 06:05:40,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:40,451 INFO L276 IsEmpty]: Start isEmpty. Operand 11009 states and 17777 transitions. [2020-10-27 06:05:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 06:05:40,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:40,469 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] [2020-10-27 06:05:40,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:05:40,470 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash -722870057, now seen corresponding path program 1 times [2020-10-27 06:05:40,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:40,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589901484] [2020-10-27 06:05:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:40,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:45,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 06:05:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:46,252 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:05:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:46,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:05:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:46,316 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 06:05:46,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589901484] [2020-10-27 06:05:46,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:46,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:46,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110243818] [2020-10-27 06:05:46,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:46,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:46,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:46,318 INFO L87 Difference]: Start difference. First operand 11009 states and 17777 transitions. Second operand 5 states. [2020-10-27 06:05:49,747 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:05:50,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:50,451 INFO L93 Difference]: Finished difference Result 32291 states and 52107 transitions. [2020-10-27 06:05:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:50,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-27 06:05:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:50,507 INFO L225 Difference]: With dead ends: 32291 [2020-10-27 06:05:50,508 INFO L226 Difference]: Without dead ends: 21470 [2020-10-27 06:05:50,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21470 states. [2020-10-27 06:05:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21470 to 21467. [2020-10-27 06:05:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21467 states. [2020-10-27 06:05:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21467 states to 21467 states and 34457 transitions. [2020-10-27 06:05:51,875 INFO L78 Accepts]: Start accepts. Automaton has 21467 states and 34457 transitions. Word has length 133 [2020-10-27 06:05:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:51,875 INFO L481 AbstractCegarLoop]: Abstraction has 21467 states and 34457 transitions. [2020-10-27 06:05:51,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 21467 states and 34457 transitions. [2020-10-27 06:05:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 06:05:51,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:51,911 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] [2020-10-27 06:05:51,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:05:51,911 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash 45657487, now seen corresponding path program 1 times [2020-10-27 06:05:51,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:51,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82099607] [2020-10-27 06:05:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:05:56,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:57,655 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:05:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:57,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:57,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:57,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:57,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:05:57,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:57,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:57,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:57,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:57,745 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 06:05:57,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82099607] [2020-10-27 06:05:57,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:57,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:57,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453226051] [2020-10-27 06:05:57,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:57,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:57,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:57,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:57,748 INFO L87 Difference]: Start difference. First operand 21467 states and 34457 transitions. Second operand 5 states. [2020-10-27 06:06:01,732 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:06:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:03,062 INFO L93 Difference]: Finished difference Result 63264 states and 101482 transitions. [2020-10-27 06:06:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:03,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-27 06:06:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:03,192 INFO L225 Difference]: With dead ends: 63264 [2020-10-27 06:06:03,192 INFO L226 Difference]: Without dead ends: 41954 [2020-10-27 06:06:03,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41954 states. [2020-10-27 06:06:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41954 to 41951. [2020-10-27 06:06:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41951 states. [2020-10-27 06:06:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41951 states to 41951 states and 66874 transitions. [2020-10-27 06:06:06,337 INFO L78 Accepts]: Start accepts. Automaton has 41951 states and 66874 transitions. Word has length 134 [2020-10-27 06:06:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:06,337 INFO L481 AbstractCegarLoop]: Abstraction has 41951 states and 66874 transitions. [2020-10-27 06:06:06,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 41951 states and 66874 transitions. [2020-10-27 06:06:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 06:06:06,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:06,391 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] [2020-10-27 06:06:06,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:06:06,391 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash 360739448, now seen corresponding path program 1 times [2020-10-27 06:06:06,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:06,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612155120] [2020-10-27 06:06:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:11,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 06:06:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:12,080 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:06:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:12,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:12,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:12,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:12,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:06:12,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:12,143 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 06:06:12,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612155120] [2020-10-27 06:06:12,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:12,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:06:12,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568818941] [2020-10-27 06:06:12,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:06:12,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:12,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:06:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:06:12,144 INFO L87 Difference]: Start difference. First operand 41951 states and 66874 transitions. Second operand 4 states. [2020-10-27 06:06:12,807 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-27 06:06:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:18,868 INFO L93 Difference]: Finished difference Result 102373 states and 164670 transitions. [2020-10-27 06:06:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:06:18,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-27 06:06:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:19,049 INFO L225 Difference]: With dead ends: 102373 [2020-10-27 06:06:19,050 INFO L226 Difference]: Without dead ends: 71010 [2020-10-27 06:06:19,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71010 states. [2020-10-27 06:06:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71010 to 70751. [2020-10-27 06:06:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70751 states. [2020-10-27 06:06:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70751 states to 70751 states and 113082 transitions. [2020-10-27 06:06:24,194 INFO L78 Accepts]: Start accepts. Automaton has 70751 states and 113082 transitions. Word has length 135 [2020-10-27 06:06:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:24,194 INFO L481 AbstractCegarLoop]: Abstraction has 70751 states and 113082 transitions. [2020-10-27 06:06:24,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:06:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 70751 states and 113082 transitions. [2020-10-27 06:06:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 06:06:24,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:24,232 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] [2020-10-27 06:06:24,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:06:24,232 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:24,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1093399530, now seen corresponding path program 1 times [2020-10-27 06:06:24,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:24,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689106480] [2020-10-27 06:06:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:29,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:29,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 06:06:29,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:06:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 06:06:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 06:06:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:06:29,975 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:06:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:29,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:29,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:29,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:06:29,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:30,041 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 06:06:30,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689106480] [2020-10-27 06:06:30,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:30,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:30,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873395986] [2020-10-27 06:06:30,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:30,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:30,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:30,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:30,043 INFO L87 Difference]: Start difference. First operand 70751 states and 113082 transitions. Second operand 5 states. [2020-10-27 06:06:35,589 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:06:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:41,786 INFO L93 Difference]: Finished difference Result 207478 states and 331409 transitions. [2020-10-27 06:06:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:41,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-27 06:06:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:42,129 INFO L225 Difference]: With dead ends: 207478 [2020-10-27 06:06:42,137 INFO L226 Difference]: Without dead ends: 137731 [2020-10-27 06:06:42,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137731 states. [2020-10-27 06:06:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137731 to 137728. [2020-10-27 06:06:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137728 states. [2020-10-27 06:06:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137728 states to 137728 states and 218829 transitions. [2020-10-27 06:06:52,254 INFO L78 Accepts]: Start accepts. Automaton has 137728 states and 218829 transitions. Word has length 138 [2020-10-27 06:06:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:52,254 INFO L481 AbstractCegarLoop]: Abstraction has 137728 states and 218829 transitions. [2020-10-27 06:06:52,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 137728 states and 218829 transitions. [2020-10-27 06:06:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 06:06:52,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:52,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:52,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:06:52,329 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:52,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1708285576, now seen corresponding path program 1 times [2020-10-27 06:06:52,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:52,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149948869] [2020-10-27 06:06:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:57,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:57,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 06:06:57,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:06:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 06:06:57,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 06:06:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:58,096 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:06:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:58,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:58,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:06:58,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:58,220 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 06:06:58,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149948869] [2020-10-27 06:06:58,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:58,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:58,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585867571] [2020-10-27 06:06:58,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:58,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:58,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:58,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:58,222 INFO L87 Difference]: Start difference. First operand 137728 states and 218829 transitions. Second operand 5 states. [2020-10-27 06:07:06,823 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 06:07:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:20,101 INFO L93 Difference]: Finished difference Result 404193 states and 641615 transitions. [2020-10-27 06:07:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:20,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 06:07:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:20,867 INFO L225 Difference]: With dead ends: 404193 [2020-10-27 06:07:20,867 INFO L226 Difference]: Without dead ends: 267998 [2020-10-27 06:07:20,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267998 states. [2020-10-27 06:07:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267998 to 267995. [2020-10-27 06:07:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267995 states. [2020-10-27 06:07:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267995 states to 267995 states and 422671 transitions. [2020-10-27 06:07:41,710 INFO L78 Accepts]: Start accepts. Automaton has 267995 states and 422671 transitions. Word has length 139 [2020-10-27 06:07:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:41,711 INFO L481 AbstractCegarLoop]: Abstraction has 267995 states and 422671 transitions. [2020-10-27 06:07:41,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 267995 states and 422671 transitions. [2020-10-27 06:07:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 06:07:41,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:41,806 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] [2020-10-27 06:07:41,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:07:41,806 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1045299485, now seen corresponding path program 1 times [2020-10-27 06:07:41,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:41,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324583669] [2020-10-27 06:07:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:44,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:46,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 06:07:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:07:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 06:07:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 06:07:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:47,679 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 06:07:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:47,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:07:47,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:47,779 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 06:07:47,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324583669] [2020-10-27 06:07:47,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:47,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:47,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103523597] [2020-10-27 06:07:47,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:47,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:47,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:47,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:47,782 INFO L87 Difference]: Start difference. First operand 267995 states and 422671 transitions. Second operand 5 states. [2020-10-27 06:08:03,367 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 295