/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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:01:02,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:01:02,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:01:02,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:01:02,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:01:02,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:01:02,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:01:02,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:01:02,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:01:02,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:01:02,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:01:02,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:01:02,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:01:02,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:01:02,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:01:02,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:01:02,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:01:02,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:01:02,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:01:02,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:01:02,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:01:02,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:01:02,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:01:02,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:01:02,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:01:02,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:01:02,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:01:02,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:01:02,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:01:02,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:01:02,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:01:02,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:01:02,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:01:02,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:01:02,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:01:02,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:01:02,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:01:02,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:01:02,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:01:02,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:01:02,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:01:02,330 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 13:01:02,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:01:02,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:01:02,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:01:02,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:01:02,381 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:01:02,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:01:02,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:01:02,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:01:02,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:01:02,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:01:02,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:01:02,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:01:02,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:01:02,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:01:02,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:01:02,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:01:02,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:01:02,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:01:02,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:01:02,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:01:02,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:01:02,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:01:02,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:01:02,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:01:02,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:01:02,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:01:02,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:01:02,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:01:02,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:01:02,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:01:02,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:01:02,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:01:02,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:01:02,844 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:01:02,845 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:01:02,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:01:02,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba30798b/71a7570e148b41bd842b40691b0ecaec/FLAG62b2387e7 [2020-10-29 13:01:03,661 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:01:03,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:01:03,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba30798b/71a7570e148b41bd842b40691b0ecaec/FLAG62b2387e7 [2020-10-29 13:01:03,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ba30798b/71a7570e148b41bd842b40691b0ecaec [2020-10-29 13:01:03,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:01:03,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:01:03,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:01:03,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:01:03,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:01:03,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:01:03" (1/1) ... [2020-10-29 13:01:03,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9dbdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:03, skipping insertion in model container [2020-10-29 13:01:03,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:01:03" (1/1) ... [2020-10-29 13:01:03,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:01:04,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:01:04,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:01:04,468 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:01:04,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:01:04,685 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:01:04,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04 WrapperNode [2020-10-29 13:01:04,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:01:04,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:01:04,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:01:04,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:01:04,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (1/1) ... [2020-10-29 13:01:04,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:01:04,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:01:04,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:01:04,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:01:04,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (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 13:01:04,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:01:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:01:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:01:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:01:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:01:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:01:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:01:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:01:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:01:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:01:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:01:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:01:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:01:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:01:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:01:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:01:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:01:06,458 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:01:06,458 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:01:06,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:01:06 BoogieIcfgContainer [2020-10-29 13:01:06,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:01:06,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:01:06,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:01:06,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:01:06,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:01:03" (1/3) ... [2020-10-29 13:01:06,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff9df81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:01:06, skipping insertion in model container [2020-10-29 13:01:06,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:04" (2/3) ... [2020-10-29 13:01:06,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff9df81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:01:06, skipping insertion in model container [2020-10-29 13:01:06,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:01:06" (3/3) ... [2020-10-29 13:01:06,470 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:01:06,482 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:01:06,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:01:06,501 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:01:06,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:01:06,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:01:06,531 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:01:06,531 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:01:06,531 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:01:06,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:01:06,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:01:06,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:01:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states. [2020-10-29 13:01:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:01:06,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:06,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:06,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:06,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1187780318, now seen corresponding path program 1 times [2020-10-29 13:01:06,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:06,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020129103] [2020-10-29 13:01:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:07,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:12,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:12,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:01:12,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:01:12,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 13:01:12,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:12,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:01:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 13:01:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 13:01:12,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:01:12,912 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:01:12,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:12,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:12,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:12,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:01:12,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:12,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:13,036 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 13:01:13,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020129103] [2020-10-29 13:01:13,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:13,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:01:13,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523930881] [2020-10-29 13:01:13,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:01:13,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:13,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:01:13,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:01:13,068 INFO L87 Difference]: Start difference. First operand 323 states. Second operand 4 states. [2020-10-29 13:01:13,861 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-29 13:01:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:16,224 INFO L93 Difference]: Finished difference Result 592 states and 1016 transitions. [2020-10-29 13:01:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:01:16,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-29 13:01:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:16,243 INFO L225 Difference]: With dead ends: 592 [2020-10-29 13:01:16,244 INFO L226 Difference]: Without dead ends: 442 [2020-10-29 13:01:16,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-29 13:01:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 438. [2020-10-29 13:01:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-29 13:01:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 735 transitions. [2020-10-29 13:01:16,353 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 735 transitions. Word has length 103 [2020-10-29 13:01:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:16,354 INFO L481 AbstractCegarLoop]: Abstraction has 438 states and 735 transitions. [2020-10-29 13:01:16,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:01:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 735 transitions. [2020-10-29 13:01:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:01:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:16,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:16,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:01:16,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:16,361 INFO L82 PathProgramCache]: Analyzing trace with hash 987544873, now seen corresponding path program 1 times [2020-10-29 13:01:16,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:16,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802628803] [2020-10-29 13:01:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:21,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:21,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:01:21,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:01:21,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 13:01:21,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:21,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:01:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:01:22,304 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:01:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:22,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:22,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:22,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:22,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:22,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:01:22,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:22,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:01:22,426 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 13:01:22,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802628803] [2020-10-29 13:01:22,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:22,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:22,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473236856] [2020-10-29 13:01:22,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:22,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:22,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:22,434 INFO L87 Difference]: Start difference. First operand 438 states and 735 transitions. Second operand 5 states. [2020-10-29 13:01:25,129 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:01:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:25,291 INFO L93 Difference]: Finished difference Result 1246 states and 2090 transitions. [2020-10-29 13:01:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:25,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 13:01:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:25,299 INFO L225 Difference]: With dead ends: 1246 [2020-10-29 13:01:25,299 INFO L226 Difference]: Without dead ends: 837 [2020-10-29 13:01:25,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-10-29 13:01:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 834. [2020-10-29 13:01:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-29 13:01:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1392 transitions. [2020-10-29 13:01:25,374 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1392 transitions. Word has length 106 [2020-10-29 13:01:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:25,375 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1392 transitions. [2020-10-29 13:01:25,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:25,375 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1392 transitions. [2020-10-29 13:01:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:01:25,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:25,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:25,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:01:25,380 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:25,382 INFO L82 PathProgramCache]: Analyzing trace with hash -967761611, now seen corresponding path program 1 times [2020-10-29 13:01:25,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:25,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127128777] [2020-10-29 13:01:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:30,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:30,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:01:30,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:01:30,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:30,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 13:01:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:01:31,237 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:01:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:31,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:31,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:01:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:31,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:31,326 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 13:01:31,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127128777] [2020-10-29 13:01:31,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:31,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:31,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600794242] [2020-10-29 13:01:31,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:31,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:31,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:31,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:31,329 INFO L87 Difference]: Start difference. First operand 834 states and 1392 transitions. Second operand 5 states. [2020-10-29 13:01:34,370 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:01:34,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:34,509 INFO L93 Difference]: Finished difference Result 2393 states and 3995 transitions. [2020-10-29 13:01:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:34,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 13:01:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:34,520 INFO L225 Difference]: With dead ends: 2393 [2020-10-29 13:01:34,520 INFO L226 Difference]: Without dead ends: 1632 [2020-10-29 13:01:34,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-10-29 13:01:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1629. [2020-10-29 13:01:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-10-29 13:01:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2712 transitions. [2020-10-29 13:01:34,707 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2712 transitions. Word has length 108 [2020-10-29 13:01:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:34,707 INFO L481 AbstractCegarLoop]: Abstraction has 1629 states and 2712 transitions. [2020-10-29 13:01:34,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:34,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2712 transitions. [2020-10-29 13:01:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:01:34,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:34,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:34,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:01:34,713 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:34,714 INFO L82 PathProgramCache]: Analyzing trace with hash -547392258, now seen corresponding path program 1 times [2020-10-29 13:01:34,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:34,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667798762] [2020-10-29 13:01:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:39,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:01:39,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:01:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:01:39,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:39,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:01:39,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:40,577 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:01:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:40,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:40,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:40,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:40,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:01:40,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:40,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:01:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:01:40,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667798762] [2020-10-29 13:01:40,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:40,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:40,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2766642] [2020-10-29 13:01:40,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:40,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:40,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:40,686 INFO L87 Difference]: Start difference. First operand 1629 states and 2712 transitions. Second operand 5 states. [2020-10-29 13:01:43,749 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:01:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:43,936 INFO L93 Difference]: Finished difference Result 4747 states and 7899 transitions. [2020-10-29 13:01:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:43,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 13:01:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:43,956 INFO L225 Difference]: With dead ends: 4747 [2020-10-29 13:01:43,957 INFO L226 Difference]: Without dead ends: 3169 [2020-10-29 13:01:43,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2020-10-29 13:01:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3166. [2020-10-29 13:01:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3166 states. [2020-10-29 13:01:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 5236 transitions. [2020-10-29 13:01:44,210 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 5236 transitions. Word has length 108 [2020-10-29 13:01:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:44,210 INFO L481 AbstractCegarLoop]: Abstraction has 3166 states and 5236 transitions. [2020-10-29 13:01:44,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 5236 transitions. [2020-10-29 13:01:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:01:44,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:44,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:44,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:01:44,219 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash 969088423, now seen corresponding path program 1 times [2020-10-29 13:01:44,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:44,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076873230] [2020-10-29 13:01:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:44,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:49,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:49,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:01:49,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:01:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:01:49,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:49,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:49,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:01:49,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:49,941 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:01:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:49,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:01:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:50,025 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 13:01:50,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076873230] [2020-10-29 13:01:50,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:50,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:50,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598210249] [2020-10-29 13:01:50,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:50,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:50,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:50,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:50,028 INFO L87 Difference]: Start difference. First operand 3166 states and 5236 transitions. Second operand 5 states. [2020-10-29 13:01:53,212 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:01:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:53,460 INFO L93 Difference]: Finished difference Result 9141 states and 15109 transitions. [2020-10-29 13:01:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:53,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-29 13:01:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:53,493 INFO L225 Difference]: With dead ends: 9141 [2020-10-29 13:01:53,493 INFO L226 Difference]: Without dead ends: 6198 [2020-10-29 13:01:53,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6198 states. [2020-10-29 13:01:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6198 to 6195. [2020-10-29 13:01:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6195 states. [2020-10-29 13:01:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6195 states to 6195 states and 10177 transitions. [2020-10-29 13:01:53,914 INFO L78 Accepts]: Start accepts. Automaton has 6195 states and 10177 transitions. Word has length 109 [2020-10-29 13:01:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:53,915 INFO L481 AbstractCegarLoop]: Abstraction has 6195 states and 10177 transitions. [2020-10-29 13:01:53,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6195 states and 10177 transitions. [2020-10-29 13:01:53,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 13:01:53,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:53,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:01:53,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:01:53,929 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:53,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:53,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1518947338, now seen corresponding path program 1 times [2020-10-29 13:01:53,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:53,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893965691] [2020-10-29 13:01:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:58,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 13:01:58,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:01:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 13:01:58,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:58,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:01:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:59,674 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:01:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:59,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:59,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:59,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:01:59,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:59,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:59,757 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 13:01:59,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893965691] [2020-10-29 13:01:59,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:59,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109523331] [2020-10-29 13:01:59,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:59,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:59,760 INFO L87 Difference]: Start difference. First operand 6195 states and 10177 transitions. Second operand 5 states. [2020-10-29 13:02:03,211 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:02:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:03,550 INFO L93 Difference]: Finished difference Result 17538 states and 28794 transitions. [2020-10-29 13:02:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:03,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-29 13:02:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:03,608 INFO L225 Difference]: With dead ends: 17538 [2020-10-29 13:02:03,608 INFO L226 Difference]: Without dead ends: 12063 [2020-10-29 13:02:03,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12063 states. [2020-10-29 13:02:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12063 to 12060. [2020-10-29 13:02:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12060 states. [2020-10-29 13:02:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12060 states to 12060 states and 19738 transitions. [2020-10-29 13:02:04,628 INFO L78 Accepts]: Start accepts. Automaton has 12060 states and 19738 transitions. Word has length 110 [2020-10-29 13:02:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:04,629 INFO L481 AbstractCegarLoop]: Abstraction has 12060 states and 19738 transitions. [2020-10-29 13:02:04,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 12060 states and 19738 transitions. [2020-10-29 13:02:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 13:02:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:04,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:04,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:02:04,653 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2125181226, now seen corresponding path program 1 times [2020-10-29 13:02:04,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:04,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121444781] [2020-10-29 13:02:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:05,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:09,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:02:09,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:10,414 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:02:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:10,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:10,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:10,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:10,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:02:10,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:10,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:10,497 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 13:02:10,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121444781] [2020-10-29 13:02:10,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:10,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:10,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948015721] [2020-10-29 13:02:10,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:10,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:10,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:10,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:10,499 INFO L87 Difference]: Start difference. First operand 12060 states and 19738 transitions. Second operand 5 states. [2020-10-29 13:02:14,485 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:02:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:15,196 INFO L93 Difference]: Finished difference Result 34459 states and 56277 transitions. [2020-10-29 13:02:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:15,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-29 13:02:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:15,251 INFO L225 Difference]: With dead ends: 34459 [2020-10-29 13:02:15,251 INFO L226 Difference]: Without dead ends: 23528 [2020-10-29 13:02:15,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23528 states. [2020-10-29 13:02:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23528 to 23525. [2020-10-29 13:02:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23525 states. [2020-10-29 13:02:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23525 states to 23525 states and 38261 transitions. [2020-10-29 13:02:17,041 INFO L78 Accepts]: Start accepts. Automaton has 23525 states and 38261 transitions. Word has length 110 [2020-10-29 13:02:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:17,042 INFO L481 AbstractCegarLoop]: Abstraction has 23525 states and 38261 transitions. [2020-10-29 13:02:17,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23525 states and 38261 transitions. [2020-10-29 13:02:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 13:02:17,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:17,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:17,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:02:17,076 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:17,076 INFO L82 PathProgramCache]: Analyzing trace with hash 719413905, now seen corresponding path program 1 times [2020-10-29 13:02:17,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:17,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901209025] [2020-10-29 13:02:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 13:02:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:22,852 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:02:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:22,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:22,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:22,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:02:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:22,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:02:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:02:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:22,929 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 13:02:22,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901209025] [2020-10-29 13:02:22,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:22,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:02:22,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829743124] [2020-10-29 13:02:22,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:02:22,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:22,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:02:22,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:02:22,931 INFO L87 Difference]: Start difference. First operand 23525 states and 38261 transitions. Second operand 8 states. [2020-10-29 13:02:23,606 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:02:27,745 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-29 13:02:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:30,203 INFO L93 Difference]: Finished difference Result 51303 states and 84093 transitions. [2020-10-29 13:02:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:02:30,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-29 13:02:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:30,293 INFO L225 Difference]: With dead ends: 51303 [2020-10-29 13:02:30,293 INFO L226 Difference]: Without dead ends: 38104 [2020-10-29 13:02:30,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:02:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38104 states. [2020-10-29 13:02:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38104 to 25605. [2020-10-29 13:02:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25605 states. [2020-10-29 13:02:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25605 states to 25605 states and 41429 transitions. [2020-10-29 13:02:32,856 INFO L78 Accepts]: Start accepts. Automaton has 25605 states and 41429 transitions. Word has length 111 [2020-10-29 13:02:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:32,857 INFO L481 AbstractCegarLoop]: Abstraction has 25605 states and 41429 transitions. [2020-10-29 13:02:32,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:02:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 25605 states and 41429 transitions. [2020-10-29 13:02:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 13:02:32,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:32,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:32,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:02:32,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:32,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:32,884 INFO L82 PathProgramCache]: Analyzing trace with hash 343057393, now seen corresponding path program 1 times [2020-10-29 13:02:32,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:32,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614473188] [2020-10-29 13:02:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 13:02:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:38,636 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:02:38,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:38,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:02:38,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:38,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:02:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:02:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:38,712 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 13:02:38,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614473188] [2020-10-29 13:02:38,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:38,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:02:38,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388449594] [2020-10-29 13:02:38,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:02:38,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:38,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:02:38,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:02:38,714 INFO L87 Difference]: Start difference. First operand 25605 states and 41429 transitions. Second operand 8 states. [2020-10-29 13:02:39,506 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:02:43,364 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-29 13:02:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:46,236 INFO L93 Difference]: Finished difference Result 42755 states and 69433 transitions. [2020-10-29 13:02:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:02:46,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-29 13:02:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:46,318 INFO L225 Difference]: With dead ends: 42755 [2020-10-29 13:02:46,318 INFO L226 Difference]: Without dead ends: 38928 [2020-10-29 13:02:46,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:02:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38928 states. [2020-10-29 13:02:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38928 to 25701. [2020-10-29 13:02:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25701 states. [2020-10-29 13:02:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25701 states to 25701 states and 41557 transitions. [2020-10-29 13:02:48,959 INFO L78 Accepts]: Start accepts. Automaton has 25701 states and 41557 transitions. Word has length 111 [2020-10-29 13:02:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:48,959 INFO L481 AbstractCegarLoop]: Abstraction has 25701 states and 41557 transitions. [2020-10-29 13:02:48,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:02:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 25701 states and 41557 transitions. [2020-10-29 13:02:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 13:02:48,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:48,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:02:48,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:02:48,983 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:48,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:48,984 INFO L82 PathProgramCache]: Analyzing trace with hash -977851258, now seen corresponding path program 1 times [2020-10-29 13:02:48,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:48,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460713498] [2020-10-29 13:02:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:52,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 13:02:52,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:02:52,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3501 [2020-10-29 13:02:52,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:52,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:02:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 13:02:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 13:02:52,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:53,173 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:02:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:53,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:53,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:53,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:53,216 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 13:02:53,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460713498] [2020-10-29 13:02:53,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:53,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:02:53,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938943951] [2020-10-29 13:02:53,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:02:53,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:53,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:02:53,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:02:53,219 INFO L87 Difference]: Start difference. First operand 25701 states and 41557 transitions. Second operand 4 states. [2020-10-29 13:02:53,852 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-29 13:02:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:59,180 INFO L93 Difference]: Finished difference Result 53483 states and 87385 transitions. [2020-10-29 13:02:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:02:59,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-29 13:02:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:59,242 INFO L225 Difference]: With dead ends: 53483 [2020-10-29 13:02:59,243 INFO L226 Difference]: Without dead ends: 39048 [2020-10-29 13:02:59,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39048 states. [2020-10-29 13:03:03,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39048 to 38917. [2020-10-29 13:03:03,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38917 states. [2020-10-29 13:03:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38917 states to 38917 states and 63093 transitions. [2020-10-29 13:03:03,415 INFO L78 Accepts]: Start accepts. Automaton has 38917 states and 63093 transitions. Word has length 111 [2020-10-29 13:03:03,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:03,416 INFO L481 AbstractCegarLoop]: Abstraction has 38917 states and 63093 transitions. [2020-10-29 13:03:03,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:03:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 38917 states and 63093 transitions. [2020-10-29 13:03:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 13:03:03,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:03,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:03:03,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:03:03,437 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1289874819, now seen corresponding path program 1 times [2020-10-29 13:03:03,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:03,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989955385] [2020-10-29 13:03:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:03,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:08,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 13:03:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:03:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:03:08,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:08,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 13:03:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:09,194 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:03:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:09,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:09,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:09,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:09,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:03:09,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:09,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:09,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:03:09,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989955385] [2020-10-29 13:03:09,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:09,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:09,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019300753] [2020-10-29 13:03:09,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:09,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:09,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:09,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:09,261 INFO L87 Difference]: Start difference. First operand 38917 states and 63093 transitions. Second operand 5 states. [2020-10-29 13:03:15,856 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:03:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:21,196 INFO L93 Difference]: Finished difference Result 112801 states and 182737 transitions. [2020-10-29 13:03:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:21,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-29 13:03:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:21,294 INFO L225 Difference]: With dead ends: 112801 [2020-10-29 13:03:21,294 INFO L226 Difference]: Without dead ends: 75742 [2020-10-29 13:03:21,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75742 states. [2020-10-29 13:03:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75742 to 75739. [2020-10-29 13:03:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75739 states. [2020-10-29 13:03:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75739 states to 75739 states and 121997 transitions. [2020-10-29 13:03:30,490 INFO L78 Accepts]: Start accepts. Automaton has 75739 states and 121997 transitions. Word has length 115 [2020-10-29 13:03:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:30,491 INFO L481 AbstractCegarLoop]: Abstraction has 75739 states and 121997 transitions. [2020-10-29 13:03:30,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 75739 states and 121997 transitions. [2020-10-29 13:03:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 13:03:30,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:30,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:30,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:03:30,535 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -16399711, now seen corresponding path program 1 times [2020-10-29 13:03:30,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:30,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746302625] [2020-10-29 13:03:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:30,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:35,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:35,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 13:03:35,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:03:35,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 13:03:35,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:35,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:35,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:35,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:03:35,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:36,331 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:03:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:36,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:36,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:36,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:03:36,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:36,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:36,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:36,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:36,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:36,406 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 13:03:36,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746302625] [2020-10-29 13:03:36,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:36,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:36,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889546299] [2020-10-29 13:03:36,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:36,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:36,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:36,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:36,409 INFO L87 Difference]: Start difference. First operand 75739 states and 121997 transitions. Second operand 5 states. [2020-10-29 13:03:45,735 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-29 13:03:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:58,138 INFO L93 Difference]: Finished difference Result 219922 states and 353949 transitions. [2020-10-29 13:03:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:58,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-29 13:03:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:58,417 INFO L225 Difference]: With dead ends: 219922 [2020-10-29 13:03:58,417 INFO L226 Difference]: Without dead ends: 148567 [2020-10-29 13:03:58,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148567 states. [2020-10-29 13:04:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148567 to 148564. [2020-10-29 13:04:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148564 states. [2020-10-29 13:04:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148564 states to 148564 states and 238011 transitions. [2020-10-29 13:04:18,314 INFO L78 Accepts]: Start accepts. Automaton has 148564 states and 238011 transitions. Word has length 117 [2020-10-29 13:04:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:18,314 INFO L481 AbstractCegarLoop]: Abstraction has 148564 states and 238011 transitions. [2020-10-29 13:04:18,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 148564 states and 238011 transitions. [2020-10-29 13:04:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 13:04:18,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:18,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:04:18,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:04:18,450 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:18,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:18,450 INFO L82 PathProgramCache]: Analyzing trace with hash -820911938, now seen corresponding path program 1 times [2020-10-29 13:04:18,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:18,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077774339] [2020-10-29 13:04:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 13:04:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:24,203 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-29 13:04:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:24,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:24,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:04:24,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:24,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:04:24,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077774339] [2020-10-29 13:04:24,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:24,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:24,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865206374] [2020-10-29 13:04:24,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:24,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:24,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:24,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:24,261 INFO L87 Difference]: Start difference. First operand 148564 states and 238011 transitions. Second operand 5 states. [2020-10-29 13:04:39,685 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 283