/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:58:22,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:58:22,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:58:22,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:58:22,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:58:22,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:58:22,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:58:22,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:58:22,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:58:22,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:58:22,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:58:22,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:58:22,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:58:22,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:58:22,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:58:22,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:58:22,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:58:22,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:58:22,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:58:22,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:58:22,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:58:22,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:58:22,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:58:22,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:58:22,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:58:22,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:58:22,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:58:22,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:58:22,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:58:22,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:58:22,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:58:22,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:58:22,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:58:22,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:58:22,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:58:22,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:58:22,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:58:22,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:58:22,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:58:22,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:58:22,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:58:22,985 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 [2020-10-29 13:58:23,036 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:58:23,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:58:23,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:58:23,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:58:23,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:58:23,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:58:23,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:58:23,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:58:23,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:58:23,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:58:23,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:58:23,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:58:23,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:58:23,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:58:23,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:58:23,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:58:23,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:58:23,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:58:23,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:58:23,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:58:23,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:58:23,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:23,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:58:23,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:58:23,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:58:23,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:58:23,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:58:23,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:58:23,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:58:23,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:58:23,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:58:23,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:58:23,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:58:23,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:58:23,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:58:23,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:58:23,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c74cfc46/3b01ad54ab524f1f9b251debb440a879/FLAG1a1550b06 [2020-10-29 13:58:24,381 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:58:24,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:58:24,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c74cfc46/3b01ad54ab524f1f9b251debb440a879/FLAG1a1550b06 [2020-10-29 13:58:24,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c74cfc46/3b01ad54ab524f1f9b251debb440a879 [2020-10-29 13:58:24,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:58:24,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:58:24,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:24,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:58:24,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:58:24,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:24" (1/1) ... [2020-10-29 13:58:24,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0c1dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:24, skipping insertion in model container [2020-10-29 13:58:24,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:24" (1/1) ... [2020-10-29 13:58:24,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:58:24,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:58:25,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:25,132 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:58:25,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:25,292 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:58:25,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25 WrapperNode [2020-10-29 13:58:25,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:25,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:58:25,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:58:25,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:58:25,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (1/1) ... [2020-10-29 13:58:25,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:58:25,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:58:25,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:58:25,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:58:25,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (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 [2020-10-29 13:58:25,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:58:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:58:25,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:58:25,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:58:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:58:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:58:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:58:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:58:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:58:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:58:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:58:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:58:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:58:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:58:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:58:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:58:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:58:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:58:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:58:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:58:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:58:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:58:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:58:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:58:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:58:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:58:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:58:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:58:26,537 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:58:26,538 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:58:26,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:26 BoogieIcfgContainer [2020-10-29 13:58:26,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:58:26,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:58:26,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:58:26,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:58:26,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:58:24" (1/3) ... [2020-10-29 13:58:26,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf2e64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:26, skipping insertion in model container [2020-10-29 13:58:26,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:25" (2/3) ... [2020-10-29 13:58:26,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf2e64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:26, skipping insertion in model container [2020-10-29 13:58:26,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:26" (3/3) ... [2020-10-29 13:58:26,550 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:58:26,563 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:58:26,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:58:26,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:58:26,613 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:58:26,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:58:26,614 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:58:26,614 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:58:26,614 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:58:26,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:58:26,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:58:26,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:58:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-29 13:58:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 13:58:26,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:26,650 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] [2020-10-29 13:58:26,651 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash 110987728, now seen corresponding path program 1 times [2020-10-29 13:58:26,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:26,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70663469] [2020-10-29 13:58:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:29,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 13:58:29,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:58:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2810 [2020-10-29 13:58:29,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:29,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:58:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:58:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 13:58:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:58:30,332 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:58:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:30,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:30,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:30,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:30,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:58:30,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:30,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:30,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:30,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:30,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70663469] [2020-10-29 13:58:30,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:30,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:58:30,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178940916] [2020-10-29 13:58:30,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:58:30,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:30,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:58:30,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:58:30,484 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2020-10-29 13:58:30,836 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:58:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:31,733 INFO L93 Difference]: Finished difference Result 356 states and 590 transitions. [2020-10-29 13:58:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:58:31,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 13:58:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:31,748 INFO L225 Difference]: With dead ends: 356 [2020-10-29 13:58:31,749 INFO L226 Difference]: Without dead ends: 245 [2020-10-29 13:58:31,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-29 13:58:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 241. [2020-10-29 13:58:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 13:58:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 378 transitions. [2020-10-29 13:58:31,831 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 378 transitions. Word has length 67 [2020-10-29 13:58:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:31,832 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 378 transitions. [2020-10-29 13:58:31,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:58:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 378 transitions. [2020-10-29 13:58:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:58:31,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:31,838 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] [2020-10-29 13:58:31,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:58:31,840 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:31,841 INFO L82 PathProgramCache]: Analyzing trace with hash 616229487, now seen corresponding path program 1 times [2020-10-29 13:58:31,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:31,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682598205] [2020-10-29 13:58:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:36,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:58:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:58:36,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:36,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:58:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 13:58:37,375 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:58:37,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:37,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:37,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:37,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:37,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:37,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:37,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:37,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682598205] [2020-10-29 13:58:37,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:37,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:37,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781919326] [2020-10-29 13:58:37,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:37,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:37,438 INFO L87 Difference]: Start difference. First operand 241 states and 378 transitions. Second operand 5 states. [2020-10-29 13:58:38,808 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:38,926 INFO L93 Difference]: Finished difference Result 640 states and 1021 transitions. [2020-10-29 13:58:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:38,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 13:58:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:38,932 INFO L225 Difference]: With dead ends: 640 [2020-10-29 13:58:38,932 INFO L226 Difference]: Without dead ends: 460 [2020-10-29 13:58:38,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-29 13:58:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 457. [2020-10-29 13:58:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-29 13:58:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 716 transitions. [2020-10-29 13:58:38,989 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 716 transitions. Word has length 69 [2020-10-29 13:58:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:38,990 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 716 transitions. [2020-10-29 13:58:38,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 716 transitions. [2020-10-29 13:58:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:58:38,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:38,998 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] [2020-10-29 13:58:38,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:58:38,999 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:39,001 INFO L82 PathProgramCache]: Analyzing trace with hash -377940500, now seen corresponding path program 1 times [2020-10-29 13:58:39,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:39,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371926662] [2020-10-29 13:58:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:43,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:58:43,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4427 [2020-10-29 13:58:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:43,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:58:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:43,924 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:58:43,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:43,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:43,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:58:43,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:43,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:43,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371926662] [2020-10-29 13:58:43,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:43,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:43,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486049802] [2020-10-29 13:58:43,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:43,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:43,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:43,983 INFO L87 Difference]: Start difference. First operand 457 states and 716 transitions. Second operand 5 states. [2020-10-29 13:58:45,271 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:45,408 INFO L93 Difference]: Finished difference Result 1208 states and 1920 transitions. [2020-10-29 13:58:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:45,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 13:58:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:45,415 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 13:58:45,415 INFO L226 Difference]: Without dead ends: 863 [2020-10-29 13:58:45,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-29 13:58:45,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2020-10-29 13:58:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-29 13:58:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1338 transitions. [2020-10-29 13:58:45,515 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1338 transitions. Word has length 70 [2020-10-29 13:58:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:45,516 INFO L481 AbstractCegarLoop]: Abstraction has 860 states and 1338 transitions. [2020-10-29 13:58:45,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1338 transitions. [2020-10-29 13:58:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:58:45,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:45,520 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] [2020-10-29 13:58:45,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:58:45,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:45,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1895012702, now seen corresponding path program 1 times [2020-10-29 13:58:45,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:45,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945358026] [2020-10-29 13:58:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:47,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:47,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:58:47,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:58:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-29 13:58:47,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:47,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:58:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 13:58:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:58:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:47,749 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:58:47,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:47,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:58:47,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:47,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:47,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945358026] [2020-10-29 13:58:47,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:47,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:58:47,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056693641] [2020-10-29 13:58:47,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:58:47,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:58:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:58:47,793 INFO L87 Difference]: Start difference. First operand 860 states and 1338 transitions. Second operand 4 states. [2020-10-29 13:58:48,153 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:58:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:49,049 INFO L93 Difference]: Finished difference Result 2126 states and 3426 transitions. [2020-10-29 13:58:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:58:49,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-29 13:58:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:49,062 INFO L225 Difference]: With dead ends: 2126 [2020-10-29 13:58:49,062 INFO L226 Difference]: Without dead ends: 1463 [2020-10-29 13:58:49,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-29 13:58:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1452. [2020-10-29 13:58:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-29 13:58:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2306 transitions. [2020-10-29 13:58:49,196 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2306 transitions. Word has length 71 [2020-10-29 13:58:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:49,201 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2306 transitions. [2020-10-29 13:58:49,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:58:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2306 transitions. [2020-10-29 13:58:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:58:49,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:49,203 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] [2020-10-29 13:58:49,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:58:49,204 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:49,204 INFO L82 PathProgramCache]: Analyzing trace with hash -239144511, now seen corresponding path program 1 times [2020-10-29 13:58:49,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:49,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525917195] [2020-10-29 13:58:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:54,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:54,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:58:54,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:58:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:58:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:54,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:58:54,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:54,679 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:58:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:58:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:54,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:54,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525917195] [2020-10-29 13:58:54,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:54,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:54,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009597026] [2020-10-29 13:58:54,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:54,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:54,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:54,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:54,758 INFO L87 Difference]: Start difference. First operand 1452 states and 2306 transitions. Second operand 5 states. [2020-10-29 13:58:56,314 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:56,702 INFO L93 Difference]: Finished difference Result 4099 states and 6532 transitions. [2020-10-29 13:58:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:56,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 13:58:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:56,720 INFO L225 Difference]: With dead ends: 4099 [2020-10-29 13:58:56,721 INFO L226 Difference]: Without dead ends: 2773 [2020-10-29 13:58:56,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2020-10-29 13:58:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2770. [2020-10-29 13:58:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-10-29 13:58:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4358 transitions. [2020-10-29 13:58:57,021 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4358 transitions. Word has length 73 [2020-10-29 13:58:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:57,025 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 4358 transitions. [2020-10-29 13:58:57,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4358 transitions. [2020-10-29 13:58:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:58:57,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:57,029 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] [2020-10-29 13:58:57,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:58:57,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash 155358574, now seen corresponding path program 1 times [2020-10-29 13:58:57,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:57,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990866152] [2020-10-29 13:58:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:59:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4189 [2020-10-29 13:59:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:01,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:59:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:01,814 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:01,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:01,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:01,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:59:01,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:01,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:01,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990866152] [2020-10-29 13:59:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:01,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:01,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503136594] [2020-10-29 13:59:01,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:01,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:01,884 INFO L87 Difference]: Start difference. First operand 2770 states and 4358 transitions. Second operand 5 states. [2020-10-29 13:59:03,542 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:03,994 INFO L93 Difference]: Finished difference Result 7734 states and 12291 transitions. [2020-10-29 13:59:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:03,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 13:59:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:04,024 INFO L225 Difference]: With dead ends: 7734 [2020-10-29 13:59:04,024 INFO L226 Difference]: Without dead ends: 5323 [2020-10-29 13:59:04,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-29 13:59:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5320. [2020-10-29 13:59:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-29 13:59:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8311 transitions. [2020-10-29 13:59:04,528 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8311 transitions. Word has length 74 [2020-10-29 13:59:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:04,528 INFO L481 AbstractCegarLoop]: Abstraction has 5320 states and 8311 transitions. [2020-10-29 13:59:04,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8311 transitions. [2020-10-29 13:59:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:59:04,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:04,534 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] [2020-10-29 13:59:04,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:59:04,535 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:04,536 INFO L82 PathProgramCache]: Analyzing trace with hash 346334016, now seen corresponding path program 1 times [2020-10-29 13:59:04,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:04,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581631362] [2020-10-29 13:59:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:04,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:08,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:59:08,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-10-29 13:59:08,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:08,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:59:08,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:59:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:09,319 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:09,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:09,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:09,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:59:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:09,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:09,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581631362] [2020-10-29 13:59:09,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:09,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:09,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827708902] [2020-10-29 13:59:09,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:09,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:09,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:09,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:09,378 INFO L87 Difference]: Start difference. First operand 5320 states and 8311 transitions. Second operand 4 states. [2020-10-29 13:59:09,797 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:59:11,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:11,341 INFO L93 Difference]: Finished difference Result 14030 states and 22395 transitions. [2020-10-29 13:59:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:11,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-29 13:59:11,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:11,378 INFO L225 Difference]: With dead ends: 14030 [2020-10-29 13:59:11,378 INFO L226 Difference]: Without dead ends: 9387 [2020-10-29 13:59:11,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2020-10-29 13:59:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 9320. [2020-10-29 13:59:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-29 13:59:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14423 transitions. [2020-10-29 13:59:12,467 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14423 transitions. Word has length 75 [2020-10-29 13:59:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:12,467 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 14423 transitions. [2020-10-29 13:59:12,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14423 transitions. [2020-10-29 13:59:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 13:59:12,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:12,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:12,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:59:12,477 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash 33697567, now seen corresponding path program 1 times [2020-10-29 13:59:12,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:12,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45791524] [2020-10-29 13:59:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:17,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 13:59:17,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:17,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:59:17,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:17,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:17,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:59:17,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:17,969 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:17,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:17,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:18,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45791524] [2020-10-29 13:59:18,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:18,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:18,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520556887] [2020-10-29 13:59:18,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:18,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:18,035 INFO L87 Difference]: Start difference. First operand 9320 states and 14423 transitions. Second operand 5 states. [2020-10-29 13:59:19,711 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:20,737 INFO L93 Difference]: Finished difference Result 26822 states and 41563 transitions. [2020-10-29 13:59:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:20,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-29 13:59:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:20,792 INFO L225 Difference]: With dead ends: 26822 [2020-10-29 13:59:20,792 INFO L226 Difference]: Without dead ends: 17874 [2020-10-29 13:59:20,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17874 states. [2020-10-29 13:59:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17874 to 17871. [2020-10-29 13:59:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17871 states. [2020-10-29 13:59:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 27392 transitions. [2020-10-29 13:59:22,438 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 27392 transitions. Word has length 77 [2020-10-29 13:59:22,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:22,439 INFO L481 AbstractCegarLoop]: Abstraction has 17871 states and 27392 transitions. [2020-10-29 13:59:22,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 27392 transitions. [2020-10-29 13:59:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:59:22,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:22,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:59:22,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:59:22,456 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash -451519928, now seen corresponding path program 1 times [2020-10-29 13:59:22,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:22,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019735933] [2020-10-29 13:59:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:27,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:27,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:59:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:59:27,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:27,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:59:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:27,857 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:27,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019735933] [2020-10-29 13:59:27,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:27,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:27,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662951422] [2020-10-29 13:59:27,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:27,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:27,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:27,904 INFO L87 Difference]: Start difference. First operand 17871 states and 27392 transitions. Second operand 5 states. [2020-10-29 13:59:30,233 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:32,137 INFO L93 Difference]: Finished difference Result 51903 states and 79459 transitions. [2020-10-29 13:59:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:32,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 13:59:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:32,240 INFO L225 Difference]: With dead ends: 51903 [2020-10-29 13:59:32,241 INFO L226 Difference]: Without dead ends: 34298 [2020-10-29 13:59:32,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34298 states. [2020-10-29 13:59:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34298 to 34295. [2020-10-29 13:59:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34295 states. [2020-10-29 13:59:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34295 states to 34295 states and 52019 transitions. [2020-10-29 13:59:35,900 INFO L78 Accepts]: Start accepts. Automaton has 34295 states and 52019 transitions. Word has length 78 [2020-10-29 13:59:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:35,901 INFO L481 AbstractCegarLoop]: Abstraction has 34295 states and 52019 transitions. [2020-10-29 13:59:35,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 34295 states and 52019 transitions. [2020-10-29 13:59:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 13:59:35,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:35,927 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] [2020-10-29 13:59:35,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:59:35,927 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:35,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:35,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1070366841, now seen corresponding path program 1 times [2020-10-29 13:59:35,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:35,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022948614] [2020-10-29 13:59:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:35,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:35,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:59:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:41,383 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:59:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:41,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:41,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022948614] [2020-10-29 13:59:41,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:41,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:41,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118927598] [2020-10-29 13:59:41,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:41,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:41,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:41,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:41,426 INFO L87 Difference]: Start difference. First operand 34295 states and 52019 transitions. Second operand 5 states. [2020-10-29 13:59:41,817 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:59:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:46,282 INFO L93 Difference]: Finished difference Result 56998 states and 86211 transitions. [2020-10-29 13:59:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:46,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 13:59:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:46,363 INFO L225 Difference]: With dead ends: 56998 [2020-10-29 13:59:46,363 INFO L226 Difference]: Without dead ends: 39141 [2020-10-29 13:59:46,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39141 states. [2020-10-29 13:59:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39141 to 39138. [2020-10-29 13:59:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39138 states. [2020-10-29 13:59:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39138 states to 39138 states and 58573 transitions. [2020-10-29 13:59:50,403 INFO L78 Accepts]: Start accepts. Automaton has 39138 states and 58573 transitions. Word has length 79 [2020-10-29 13:59:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:50,403 INFO L481 AbstractCegarLoop]: Abstraction has 39138 states and 58573 transitions. [2020-10-29 13:59:50,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 39138 states and 58573 transitions. [2020-10-29 13:59:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 13:59:50,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:50,439 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] [2020-10-29 13:59:50,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:59:50,440 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:50,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2088881698, now seen corresponding path program 1 times [2020-10-29 13:59:50,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:50,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156025721] [2020-10-29 13:59:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:55,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 13:59:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:55,911 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:55,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:55,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:55,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:55,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:55,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:55,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:55,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:55,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156025721] [2020-10-29 13:59:55,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:55,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:55,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629615575] [2020-10-29 13:59:55,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:55,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:55,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:55,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:55,952 INFO L87 Difference]: Start difference. First operand 39138 states and 58573 transitions. Second operand 4 states. [2020-10-29 13:59:58,121 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:00:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:01,839 INFO L93 Difference]: Finished difference Result 78132 states and 118349 transitions. [2020-10-29 14:00:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:01,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-29 14:00:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:01,952 INFO L225 Difference]: With dead ends: 78132 [2020-10-29 14:00:01,952 INFO L226 Difference]: Without dead ends: 50885 [2020-10-29 14:00:02,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50885 states. [2020-10-29 14:00:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50885 to 49410. [2020-10-29 14:00:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49410 states. [2020-10-29 14:00:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49410 states to 49410 states and 73933 transitions. [2020-10-29 14:00:07,224 INFO L78 Accepts]: Start accepts. Automaton has 49410 states and 73933 transitions. Word has length 79 [2020-10-29 14:00:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:07,225 INFO L481 AbstractCegarLoop]: Abstraction has 49410 states and 73933 transitions. [2020-10-29 14:00:07,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 49410 states and 73933 transitions. [2020-10-29 14:00:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:00:07,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:07,246 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] [2020-10-29 14:00:07,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:00:07,246 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:07,247 INFO L82 PathProgramCache]: Analyzing trace with hash 839390698, now seen corresponding path program 1 times [2020-10-29 14:00:07,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:07,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838491442] [2020-10-29 14:00:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:12,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:12,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:00:12,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:00:12,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:12,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:00:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:00:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:12,692 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:12,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:12,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838491442] [2020-10-29 14:00:12,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:12,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:12,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74189183] [2020-10-29 14:00:12,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:12,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:12,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:12,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:12,729 INFO L87 Difference]: Start difference. First operand 49410 states and 73933 transitions. Second operand 5 states. [2020-10-29 14:00:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:16,999 INFO L93 Difference]: Finished difference Result 80859 states and 121013 transitions. [2020-10-29 14:00:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:17,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:00:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:17,036 INFO L225 Difference]: With dead ends: 80859 [2020-10-29 14:00:17,036 INFO L226 Difference]: Without dead ends: 31937 [2020-10-29 14:00:17,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31937 states. [2020-10-29 14:00:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31937 to 31937. [2020-10-29 14:00:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31937 states. [2020-10-29 14:00:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31937 states to 31937 states and 47699 transitions. [2020-10-29 14:00:20,398 INFO L78 Accepts]: Start accepts. Automaton has 31937 states and 47699 transitions. Word has length 79 [2020-10-29 14:00:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:20,398 INFO L481 AbstractCegarLoop]: Abstraction has 31937 states and 47699 transitions. [2020-10-29 14:00:20,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 31937 states and 47699 transitions. [2020-10-29 14:00:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:00:20,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:20,411 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] [2020-10-29 14:00:20,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:00:20,412 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1162230626, now seen corresponding path program 1 times [2020-10-29 14:00:20,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:20,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298807607] [2020-10-29 14:00:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:20,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:25,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:00:25,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:00:25,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:25,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:00:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 14:00:25,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 14:00:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:25,819 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:00:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:25,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:25,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298807607] [2020-10-29 14:00:25,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:25,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:00:25,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174485233] [2020-10-29 14:00:25,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:00:25,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:25,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:00:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:25,863 INFO L87 Difference]: Start difference. First operand 31937 states and 47699 transitions. Second operand 6 states. [2020-10-29 14:00:26,273 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:28,813 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:00:29,225 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:00:30,378 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:00:31,341 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:00:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:40,026 INFO L93 Difference]: Finished difference Result 144211 states and 221039 transitions. [2020-10-29 14:00:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:00:40,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-29 14:00:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:40,328 INFO L225 Difference]: With dead ends: 144211 [2020-10-29 14:00:40,328 INFO L226 Difference]: Without dead ends: 114528 [2020-10-29 14:00:40,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:00:40,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114528 states. [2020-10-29 14:00:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114528 to 58821. [2020-10-29 14:00:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58821 states. [2020-10-29 14:00:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58821 states to 58821 states and 88323 transitions. [2020-10-29 14:00:47,143 INFO L78 Accepts]: Start accepts. Automaton has 58821 states and 88323 transitions. Word has length 79 [2020-10-29 14:00:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:47,144 INFO L481 AbstractCegarLoop]: Abstraction has 58821 states and 88323 transitions. [2020-10-29 14:00:47,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:00:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 58821 states and 88323 transitions. [2020-10-29 14:00:47,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:00:47,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:47,159 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] [2020-10-29 14:00:47,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:00:47,160 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:47,167 INFO L82 PathProgramCache]: Analyzing trace with hash 715287774, now seen corresponding path program 1 times [2020-10-29 14:00:47,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:47,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227331836] [2020-10-29 14:00:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:47,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:00:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:52,588 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:00:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:52,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:52,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227331836] [2020-10-29 14:00:52,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:52,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:52,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143409413] [2020-10-29 14:00:52,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:52,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:52,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:52,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:52,621 INFO L87 Difference]: Start difference. First operand 58821 states and 88323 transitions. Second operand 5 states. [2020-10-29 14:00:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:57,665 INFO L93 Difference]: Finished difference Result 97786 states and 146777 transitions. [2020-10-29 14:00:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:57,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:00:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:57,716 INFO L225 Difference]: With dead ends: 97786 [2020-10-29 14:00:57,717 INFO L226 Difference]: Without dead ends: 39157 [2020-10-29 14:00:57,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39157 states. [2020-10-29 14:01:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39157 to 39139. [2020-10-29 14:01:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39139 states. [2020-10-29 14:01:02,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39139 states to 39139 states and 58671 transitions. [2020-10-29 14:01:02,168 INFO L78 Accepts]: Start accepts. Automaton has 39139 states and 58671 transitions. Word has length 80 [2020-10-29 14:01:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:02,168 INFO L481 AbstractCegarLoop]: Abstraction has 39139 states and 58671 transitions. [2020-10-29 14:01:02,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 39139 states and 58671 transitions. [2020-10-29 14:01:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:01:02,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:02,177 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] [2020-10-29 14:01:02,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:01:02,178 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:02,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1580901059, now seen corresponding path program 1 times [2020-10-29 14:01:02,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:02,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596357905] [2020-10-29 14:01:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:01:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:07,625 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:07,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:07,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:07,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:07,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596357905] [2020-10-29 14:01:07,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:07,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:07,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784784039] [2020-10-29 14:01:07,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:07,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:07,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:07,661 INFO L87 Difference]: Start difference. First operand 39139 states and 58671 transitions. Second operand 5 states. [2020-10-29 14:01:08,048 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:01:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:14,899 INFO L93 Difference]: Finished difference Result 77065 states and 115200 transitions. [2020-10-29 14:01:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:14,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:01:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:14,956 INFO L225 Difference]: With dead ends: 77065 [2020-10-29 14:01:14,956 INFO L226 Difference]: Without dead ends: 46332 [2020-10-29 14:01:14,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46332 states. [2020-10-29 14:01:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46332 to 46329. [2020-10-29 14:01:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46329 states. [2020-10-29 14:01:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46329 states to 46329 states and 68554 transitions. [2020-10-29 14:01:20,329 INFO L78 Accepts]: Start accepts. Automaton has 46329 states and 68554 transitions. Word has length 80 [2020-10-29 14:01:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:20,329 INFO L481 AbstractCegarLoop]: Abstraction has 46329 states and 68554 transitions. [2020-10-29 14:01:20,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 46329 states and 68554 transitions. [2020-10-29 14:01:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:01:20,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:20,342 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] [2020-10-29 14:01:20,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:01:20,342 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:20,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:20,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1206581802, now seen corresponding path program 1 times [2020-10-29 14:01:20,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:20,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610939182] [2020-10-29 14:01:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:22,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:01:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:25,750 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:25,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:25,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610939182] [2020-10-29 14:01:25,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:25,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:25,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095082302] [2020-10-29 14:01:25,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:25,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:25,781 INFO L87 Difference]: Start difference. First operand 46329 states and 68554 transitions. Second operand 5 states. [2020-10-29 14:01:26,172 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:01:29,137 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:01:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:38,222 INFO L93 Difference]: Finished difference Result 136563 states and 206034 transitions. [2020-10-29 14:01:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:01:38,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:01:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:38,547 INFO L225 Difference]: With dead ends: 136563 [2020-10-29 14:01:38,547 INFO L226 Difference]: Without dead ends: 93459 [2020-10-29 14:01:38,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:01:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93459 states. [2020-10-29 14:01:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93459 to 69601. [2020-10-29 14:01:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69601 states. [2020-10-29 14:01:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69601 states to 69601 states and 103569 transitions. [2020-10-29 14:01:47,278 INFO L78 Accepts]: Start accepts. Automaton has 69601 states and 103569 transitions. Word has length 80 [2020-10-29 14:01:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:47,278 INFO L481 AbstractCegarLoop]: Abstraction has 69601 states and 103569 transitions. [2020-10-29 14:01:47,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 69601 states and 103569 transitions. [2020-10-29 14:01:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:01:47,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:47,298 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] [2020-10-29 14:01:47,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:01:47,298 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:47,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1275327723, now seen corresponding path program 1 times [2020-10-29 14:01:47,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:47,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428901755] [2020-10-29 14:01:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:52,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 14:01:52,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:01:52,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:01:52,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:52,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 14:01:52,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:01:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:52,706 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:52,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:01:52,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:52,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:52,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428901755] [2020-10-29 14:01:52,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:52,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:52,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479404353] [2020-10-29 14:01:52,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:52,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:52,737 INFO L87 Difference]: Start difference. First operand 69601 states and 103569 transitions. Second operand 5 states. [2020-10-29 14:01:53,135 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:01:56,631 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 195