/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:22:42,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:22:42,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:22:42,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:22:42,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:22:42,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:22:42,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:22:42,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:22:42,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:22:42,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:22:42,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:22:42,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:22:42,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:22:42,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:22:42,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:22:42,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:22:42,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:22:42,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:22:42,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:22:42,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:22:42,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:22:42,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:22:42,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:22:42,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:22:42,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:22:42,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:22:42,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:22:42,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:22:42,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:22:42,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:22:42,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:22:42,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:22:42,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:22:42,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:22:42,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:22:42,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:22:42,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:22:42,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:22:42,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:22:42,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:22:42,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:22:42,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:22:42,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:22:42,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:22:42,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:22:42,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:22:42,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:22:42,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:22:42,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:22:42,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:22:42,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:22:42,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:22:42,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:22:42,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:22:42,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:22:42,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:22:42,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:22:42,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:22:42,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:22:42,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:22:42,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:22:42,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:22:42,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:22:42,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:42,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:22:42,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:22:42,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:22:42,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:22:42,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:22:42,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:22:42,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:22:42,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:22:43,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:22:43,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:22:43,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:22:43,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:22:43,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:22:43,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:22:43,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75f5f7b4b/551b9a0b0a8a425393cdf7e77b696ab3/FLAG90c449258 [2020-10-27 23:22:44,253 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:22:44,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:22:44,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75f5f7b4b/551b9a0b0a8a425393cdf7e77b696ab3/FLAG90c449258 [2020-10-27 23:22:44,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75f5f7b4b/551b9a0b0a8a425393cdf7e77b696ab3 [2020-10-27 23:22:44,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:22:44,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:22:44,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:44,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:22:44,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:22:44,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:44" (1/1) ... [2020-10-27 23:22:44,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0c1dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:44, skipping insertion in model container [2020-10-27 23:22:44,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:44" (1/1) ... [2020-10-27 23:22:44,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:22:44,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:22:45,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:45,254 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:22:45,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:45,432 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:22:45,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45 WrapperNode [2020-10-27 23:22:45,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:45,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:22:45,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:22:45,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:22:45,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... [2020-10-27 23:22:45,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:22:45,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:22:45,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:22:45,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:22:45,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:45,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:22:45,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:22:45,644 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:22:45,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:22:45,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:22:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:22:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:22:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:22:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:22:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:22:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:22:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:22:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:22:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:22:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:22:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:22:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:22:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:22:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:22:45,651 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:22:45,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:22:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:22:47,028 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:22:47,029 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:22:47,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:22:47 BoogieIcfgContainer [2020-10-27 23:22:47,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:22:47,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:22:47,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:22:47,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:22:47,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:22:44" (1/3) ... [2020-10-27 23:22:47,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65885a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:22:47, skipping insertion in model container [2020-10-27 23:22:47,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:45" (2/3) ... [2020-10-27 23:22:47,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65885a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:22:47, skipping insertion in model container [2020-10-27 23:22:47,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:22:47" (3/3) ... [2020-10-27 23:22:47,050 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 23:22:47,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:22:47,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:22:47,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:22:47,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:22:47,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:22:47,115 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:22:47,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:22:47,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:22:47,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:22:47,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:22:47,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:22:47,141 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-27 23:22:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:22:47,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:47,154 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] [2020-10-27 23:22:47,154 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:47,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1796081780, now seen corresponding path program 1 times [2020-10-27 23:22:47,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:47,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104729080] [2020-10-27 23:22:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:22:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:22:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:22:52,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:52,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:22:52,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:22:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 23:22:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:22:53,249 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:22:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:22:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:53,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:22:53,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:22:53,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:22:53,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:22:53,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:22:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:22:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:22:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:22:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:22:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:22:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104729080] [2020-10-27 23:22:53,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:22:53,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:22:53,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888493916] [2020-10-27 23:22:53,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:22:53,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:22:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:22:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:22:53,384 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-10-27 23:22:55,723 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:22:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:22:56,691 INFO L93 Difference]: Finished difference Result 705 states and 1252 transitions. [2020-10-27 23:22:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:22:56,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-27 23:22:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:22:56,728 INFO L225 Difference]: With dead ends: 705 [2020-10-27 23:22:56,728 INFO L226 Difference]: Without dead ends: 464 [2020-10-27 23:22:56,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:22:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-27 23:22:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 439. [2020-10-27 23:22:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-27 23:22:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 638 transitions. [2020-10-27 23:22:56,859 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 638 transitions. Word has length 97 [2020-10-27 23:22:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:22:56,860 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 638 transitions. [2020-10-27 23:22:56,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:22:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 638 transitions. [2020-10-27 23:22:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:22:56,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:22:56,866 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] [2020-10-27 23:22:56,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:22:56,867 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:22:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:22:56,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1283869149, now seen corresponding path program 1 times [2020-10-27 23:22:56,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:22:56,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215833845] [2020-10-27 23:22:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:22:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:22:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:22:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:01,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:23:01,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:23:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:23:01,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:23:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:23:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:02,244 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:02,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:02,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:02,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:02,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:02,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:23:02,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:02,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215833845] [2020-10-27 23:23:02,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:02,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:02,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643419522] [2020-10-27 23:23:02,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:02,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:02,321 INFO L87 Difference]: Start difference. First operand 439 states and 638 transitions. Second operand 4 states. [2020-10-27 23:23:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:04,555 INFO L93 Difference]: Finished difference Result 1265 states and 1836 transitions. [2020-10-27 23:23:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:23:04,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-27 23:23:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:04,561 INFO L225 Difference]: With dead ends: 1265 [2020-10-27 23:23:04,562 INFO L226 Difference]: Without dead ends: 854 [2020-10-27 23:23:04,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-27 23:23:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 441. [2020-10-27 23:23:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-27 23:23:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 640 transitions. [2020-10-27 23:23:04,628 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 640 transitions. Word has length 98 [2020-10-27 23:23:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:04,631 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 640 transitions. [2020-10-27 23:23:04,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 640 transitions. [2020-10-27 23:23:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:23:04,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:04,639 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] [2020-10-27 23:23:04,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:23:04,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash -685314735, now seen corresponding path program 1 times [2020-10-27 23:23:04,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:04,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593394549] [2020-10-27 23:23:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:09,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:23:09,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:23:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:23:09,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:23:09,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 23:23:09,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:09,991 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:09,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:10,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:10,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:10,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:23:10,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:10,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593394549] [2020-10-27 23:23:10,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:10,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:10,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414427190] [2020-10-27 23:23:10,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:10,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:10,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:10,078 INFO L87 Difference]: Start difference. First operand 441 states and 640 transitions. Second operand 4 states. [2020-10-27 23:23:11,556 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:23:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:12,442 INFO L93 Difference]: Finished difference Result 1119 states and 1643 transitions. [2020-10-27 23:23:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:12,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-27 23:23:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:12,448 INFO L225 Difference]: With dead ends: 1119 [2020-10-27 23:23:12,448 INFO L226 Difference]: Without dead ends: 840 [2020-10-27 23:23:12,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-27 23:23:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 815. [2020-10-27 23:23:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-27 23:23:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1176 transitions. [2020-10-27 23:23:12,512 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1176 transitions. Word has length 99 [2020-10-27 23:23:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:12,512 INFO L481 AbstractCegarLoop]: Abstraction has 815 states and 1176 transitions. [2020-10-27 23:23:12,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1176 transitions. [2020-10-27 23:23:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:23:12,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:12,516 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] [2020-10-27 23:23:12,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:23:12,516 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:12,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:12,517 INFO L82 PathProgramCache]: Analyzing trace with hash 582754580, now seen corresponding path program 1 times [2020-10-27 23:23:12,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:12,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440845924] [2020-10-27 23:23:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:23:17,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:23:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:23:17,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:23:17,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:23:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:17,988 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:18,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:18,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:23:18,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:18,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440845924] [2020-10-27 23:23:18,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:18,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:18,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840502615] [2020-10-27 23:23:18,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:18,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:18,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:18,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:18,068 INFO L87 Difference]: Start difference. First operand 815 states and 1176 transitions. Second operand 5 states. [2020-10-27 23:23:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:19,336 INFO L93 Difference]: Finished difference Result 1293 states and 1885 transitions. [2020-10-27 23:23:19,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:19,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 23:23:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:19,343 INFO L225 Difference]: With dead ends: 1293 [2020-10-27 23:23:19,344 INFO L226 Difference]: Without dead ends: 630 [2020-10-27 23:23:19,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-27 23:23:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2020-10-27 23:23:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-10-27 23:23:19,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 904 transitions. [2020-10-27 23:23:19,403 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 904 transitions. Word has length 99 [2020-10-27 23:23:19,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:19,403 INFO L481 AbstractCegarLoop]: Abstraction has 630 states and 904 transitions. [2020-10-27 23:23:19,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 904 transitions. [2020-10-27 23:23:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:23:19,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:19,406 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] [2020-10-27 23:23:19,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:23:19,407 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash 987371717, now seen corresponding path program 1 times [2020-10-27 23:23:19,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:19,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249152278] [2020-10-27 23:23:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:21,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:24,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:23:24,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:23:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:23:24,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 23:23:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 23:23:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:24,772 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:24,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:23:24,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:24,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249152278] [2020-10-27 23:23:24,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:24,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:24,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113295945] [2020-10-27 23:23:24,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:24,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:24,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:24,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:24,866 INFO L87 Difference]: Start difference. First operand 630 states and 904 transitions. Second operand 5 states. [2020-10-27 23:23:25,256 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:23:26,245 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:23:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:26,681 INFO L93 Difference]: Finished difference Result 902 states and 1347 transitions. [2020-10-27 23:23:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:23:26,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 23:23:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:26,686 INFO L225 Difference]: With dead ends: 902 [2020-10-27 23:23:26,686 INFO L226 Difference]: Without dead ends: 641 [2020-10-27 23:23:26,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:23:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-27 23:23:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2020-10-27 23:23:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-27 23:23:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 912 transitions. [2020-10-27 23:23:26,734 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 912 transitions. Word has length 101 [2020-10-27 23:23:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:26,735 INFO L481 AbstractCegarLoop]: Abstraction has 639 states and 912 transitions. [2020-10-27 23:23:26,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 912 transitions. [2020-10-27 23:23:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:23:26,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:26,737 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] [2020-10-27 23:23:26,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:23:26,738 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:26,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:26,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1956938822, now seen corresponding path program 1 times [2020-10-27 23:23:26,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:26,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976741201] [2020-10-27 23:23:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:27,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:31,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:23:31,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:23:31,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:23:31,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 23:23:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:32,173 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:23:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:32,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976741201] [2020-10-27 23:23:32,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:32,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:32,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644535064] [2020-10-27 23:23:32,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:32,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:32,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:32,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:32,258 INFO L87 Difference]: Start difference. First operand 639 states and 912 transitions. Second operand 5 states. [2020-10-27 23:23:33,688 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:23:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:34,651 INFO L93 Difference]: Finished difference Result 1417 states and 2056 transitions. [2020-10-27 23:23:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:34,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 23:23:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:34,660 INFO L225 Difference]: With dead ends: 1417 [2020-10-27 23:23:34,660 INFO L226 Difference]: Without dead ends: 985 [2020-10-27 23:23:34,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-10-27 23:23:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 972. [2020-10-27 23:23:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-27 23:23:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1386 transitions. [2020-10-27 23:23:34,749 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1386 transitions. Word has length 101 [2020-10-27 23:23:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:34,750 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1386 transitions. [2020-10-27 23:23:34,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1386 transitions. [2020-10-27 23:23:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 23:23:34,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:34,753 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] [2020-10-27 23:23:34,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:23:34,753 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:34,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1776602639, now seen corresponding path program 1 times [2020-10-27 23:23:34,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:34,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103626062] [2020-10-27 23:23:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:39,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 23:23:39,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:23:39,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:23:39,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:23:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:23:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:40,078 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:23:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:40,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103626062] [2020-10-27 23:23:40,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:40,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:40,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909865687] [2020-10-27 23:23:40,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:40,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:40,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:40,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:40,153 INFO L87 Difference]: Start difference. First operand 972 states and 1386 transitions. Second operand 4 states. [2020-10-27 23:23:41,606 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:23:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:42,452 INFO L93 Difference]: Finished difference Result 2511 states and 3621 transitions. [2020-10-27 23:23:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:42,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-27 23:23:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:42,465 INFO L225 Difference]: With dead ends: 2511 [2020-10-27 23:23:42,466 INFO L226 Difference]: Without dead ends: 1820 [2020-10-27 23:23:42,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2020-10-27 23:23:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1805. [2020-10-27 23:23:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2020-10-27 23:23:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2557 transitions. [2020-10-27 23:23:42,609 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2557 transitions. Word has length 103 [2020-10-27 23:23:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:42,610 INFO L481 AbstractCegarLoop]: Abstraction has 1805 states and 2557 transitions. [2020-10-27 23:23:42,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2557 transitions. [2020-10-27 23:23:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 23:23:42,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:42,614 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] [2020-10-27 23:23:42,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:23:42,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1362264308, now seen corresponding path program 1 times [2020-10-27 23:23:42,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:42,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820955038] [2020-10-27 23:23:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:47,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 23:23:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:47,974 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:47,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:47,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:23:47,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:47,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:48,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820955038] [2020-10-27 23:23:48,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:48,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:48,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015349000] [2020-10-27 23:23:48,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:48,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:48,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:48,023 INFO L87 Difference]: Start difference. First operand 1805 states and 2557 transitions. Second operand 5 states. [2020-10-27 23:23:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:49,232 INFO L93 Difference]: Finished difference Result 3131 states and 4455 transitions. [2020-10-27 23:23:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:49,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 23:23:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:49,241 INFO L225 Difference]: With dead ends: 3131 [2020-10-27 23:23:49,241 INFO L226 Difference]: Without dead ends: 1492 [2020-10-27 23:23:49,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2020-10-27 23:23:49,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1492. [2020-10-27 23:23:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-10-27 23:23:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2099 transitions. [2020-10-27 23:23:49,364 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2099 transitions. Word has length 103 [2020-10-27 23:23:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:49,365 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 2099 transitions. [2020-10-27 23:23:49,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2099 transitions. [2020-10-27 23:23:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 23:23:49,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:49,368 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] [2020-10-27 23:23:49,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:23:49,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:49,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1790731421, now seen corresponding path program 1 times [2020-10-27 23:23:49,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:49,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410114635] [2020-10-27 23:23:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:54,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 23:23:54,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:23:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:23:54,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 23:23:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:54,720 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:54,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:23:54,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:23:54,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410114635] [2020-10-27 23:23:54,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:54,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:54,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998557722] [2020-10-27 23:23:54,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:54,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:54,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:54,775 INFO L87 Difference]: Start difference. First operand 1492 states and 2099 transitions. Second operand 5 states. [2020-10-27 23:23:56,093 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:23:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:57,026 INFO L93 Difference]: Finished difference Result 4269 states and 5993 transitions. [2020-10-27 23:23:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:57,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-27 23:23:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:57,040 INFO L225 Difference]: With dead ends: 4269 [2020-10-27 23:23:57,040 INFO L226 Difference]: Without dead ends: 2830 [2020-10-27 23:23:57,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-10-27 23:23:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2801. [2020-10-27 23:23:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-10-27 23:23:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3891 transitions. [2020-10-27 23:23:57,296 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3891 transitions. Word has length 105 [2020-10-27 23:23:57,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:57,297 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3891 transitions. [2020-10-27 23:23:57,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:57,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3891 transitions. [2020-10-27 23:23:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 23:23:57,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:57,302 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] [2020-10-27 23:23:57,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:23:57,302 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash -458168663, now seen corresponding path program 1 times [2020-10-27 23:23:57,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:57,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460195014] [2020-10-27 23:23:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:00,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 23:24:02,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:24:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:24:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:24:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 23:24:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:02,618 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:02,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:02,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:02,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:24:02,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:02,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:02,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460195014] [2020-10-27 23:24:02,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:02,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:02,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341409717] [2020-10-27 23:24:02,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:02,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:02,661 INFO L87 Difference]: Start difference. First operand 2801 states and 3891 transitions. Second operand 5 states. [2020-10-27 23:24:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:03,847 INFO L93 Difference]: Finished difference Result 5109 states and 7172 transitions. [2020-10-27 23:24:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:03,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 23:24:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:03,861 INFO L225 Difference]: With dead ends: 5109 [2020-10-27 23:24:03,862 INFO L226 Difference]: Without dead ends: 2801 [2020-10-27 23:24:03,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2020-10-27 23:24:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2801. [2020-10-27 23:24:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-10-27 23:24:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3881 transitions. [2020-10-27 23:24:04,066 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3881 transitions. Word has length 106 [2020-10-27 23:24:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:04,067 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3881 transitions. [2020-10-27 23:24:04,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3881 transitions. [2020-10-27 23:24:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 23:24:04,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:04,072 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] [2020-10-27 23:24:04,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:24:04,072 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1954744022, now seen corresponding path program 1 times [2020-10-27 23:24:04,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:04,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247193410] [2020-10-27 23:24:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 23:24:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 23:24:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 23:24:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:24:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:09,361 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:09,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:09,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:09,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:24:09,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:09,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247193410] [2020-10-27 23:24:09,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:09,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:09,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605073560] [2020-10-27 23:24:09,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:09,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:09,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:09,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:09,410 INFO L87 Difference]: Start difference. First operand 2801 states and 3881 transitions. Second operand 4 states. [2020-10-27 23:24:10,781 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:24:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:11,671 INFO L93 Difference]: Finished difference Result 6079 states and 8596 transitions. [2020-10-27 23:24:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:11,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-27 23:24:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:11,690 INFO L225 Difference]: With dead ends: 6079 [2020-10-27 23:24:11,690 INFO L226 Difference]: Without dead ends: 3951 [2020-10-27 23:24:11,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2020-10-27 23:24:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3916. [2020-10-27 23:24:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3916 states. [2020-10-27 23:24:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 5409 transitions. [2020-10-27 23:24:11,988 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 5409 transitions. Word has length 107 [2020-10-27 23:24:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:11,988 INFO L481 AbstractCegarLoop]: Abstraction has 3916 states and 5409 transitions. [2020-10-27 23:24:11,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:11,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 5409 transitions. [2020-10-27 23:24:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 23:24:11,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:11,995 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] [2020-10-27 23:24:11,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:24:11,995 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash -2124360414, now seen corresponding path program 1 times [2020-10-27 23:24:11,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:11,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632433354] [2020-10-27 23:24:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:12,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:17,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 23:24:17,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:24:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:24:17,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:24:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 23:24:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 23:24:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:17,356 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:17,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632433354] [2020-10-27 23:24:17,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:17,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:24:17,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889320227] [2020-10-27 23:24:17,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:24:17,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:17,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:24:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:17,390 INFO L87 Difference]: Start difference. First operand 3916 states and 5409 transitions. Second operand 7 states. [2020-10-27 23:24:17,685 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:24:18,947 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:24:19,210 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:24:19,481 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:24:19,774 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:24:20,065 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:21,793 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:22,124 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:22,321 INFO L93 Difference]: Finished difference Result 19515 states and 28674 transitions. [2020-10-27 23:24:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 23:24:22,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-27 23:24:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:22,385 INFO L225 Difference]: With dead ends: 19515 [2020-10-27 23:24:22,385 INFO L226 Difference]: Without dead ends: 16884 [2020-10-27 23:24:22,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:24:22,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16884 states. [2020-10-27 23:24:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16884 to 14978. [2020-10-27 23:24:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14978 states. [2020-10-27 23:24:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14978 states to 14978 states and 21828 transitions. [2020-10-27 23:24:23,489 INFO L78 Accepts]: Start accepts. Automaton has 14978 states and 21828 transitions. Word has length 109 [2020-10-27 23:24:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:23,490 INFO L481 AbstractCegarLoop]: Abstraction has 14978 states and 21828 transitions. [2020-10-27 23:24:23,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:24:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 14978 states and 21828 transitions. [2020-10-27 23:24:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 23:24:23,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:23,503 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] [2020-10-27 23:24:23,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:24:23,504 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash -952186883, now seen corresponding path program 1 times [2020-10-27 23:24:23,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:23,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605753454] [2020-10-27 23:24:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:23,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:25,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:28,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 23:24:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:24:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:24:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:24:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 23:24:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:28,949 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:29,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605753454] [2020-10-27 23:24:29,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:29,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:29,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482122431] [2020-10-27 23:24:29,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:29,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:29,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:29,007 INFO L87 Difference]: Start difference. First operand 14978 states and 21828 transitions. Second operand 5 states. [2020-10-27 23:24:30,696 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:32,550 INFO L93 Difference]: Finished difference Result 25132 states and 36891 transitions. [2020-10-27 23:24:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:24:32,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 23:24:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:32,586 INFO L225 Difference]: With dead ends: 25132 [2020-10-27 23:24:32,586 INFO L226 Difference]: Without dead ends: 15224 [2020-10-27 23:24:32,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15224 states. [2020-10-27 23:24:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15224 to 15076. [2020-10-27 23:24:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15076 states. [2020-10-27 23:24:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15076 states to 15076 states and 21942 transitions. [2020-10-27 23:24:33,839 INFO L78 Accepts]: Start accepts. Automaton has 15076 states and 21942 transitions. Word has length 109 [2020-10-27 23:24:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:33,840 INFO L481 AbstractCegarLoop]: Abstraction has 15076 states and 21942 transitions. [2020-10-27 23:24:33,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 15076 states and 21942 transitions. [2020-10-27 23:24:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 23:24:33,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:33,852 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] [2020-10-27 23:24:33,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:24:33,852 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:33,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1867036857, now seen corresponding path program 1 times [2020-10-27 23:24:33,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:33,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348194011] [2020-10-27 23:24:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:38,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 23:24:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:39,201 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:39,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:39,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348194011] [2020-10-27 23:24:39,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:39,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:39,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683169423] [2020-10-27 23:24:39,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:39,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:39,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:39,239 INFO L87 Difference]: Start difference. First operand 15076 states and 21942 transitions. Second operand 5 states. [2020-10-27 23:24:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:41,423 INFO L93 Difference]: Finished difference Result 30111 states and 43823 transitions. [2020-10-27 23:24:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:41,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 23:24:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:41,458 INFO L225 Difference]: With dead ends: 30111 [2020-10-27 23:24:41,458 INFO L226 Difference]: Without dead ends: 15072 [2020-10-27 23:24:41,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15072 states. [2020-10-27 23:24:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 15072. [2020-10-27 23:24:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15072 states. [2020-10-27 23:24:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15072 states to 15072 states and 21930 transitions. [2020-10-27 23:24:42,633 INFO L78 Accepts]: Start accepts. Automaton has 15072 states and 21930 transitions. Word has length 110 [2020-10-27 23:24:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:42,633 INFO L481 AbstractCegarLoop]: Abstraction has 15072 states and 21930 transitions. [2020-10-27 23:24:42,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:42,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15072 states and 21930 transitions. [2020-10-27 23:24:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 23:24:42,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:42,643 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] [2020-10-27 23:24:42,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:24:42,644 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:42,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1934557202, now seen corresponding path program 1 times [2020-10-27 23:24:42,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:42,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394927001] [2020-10-27 23:24:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:44,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:47,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:47,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:24:47,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:24:47,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:24:47,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:24:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 23:24:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:24:47,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:48,074 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:48,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:48,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:48,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394927001] [2020-10-27 23:24:48,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:48,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:24:48,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827299240] [2020-10-27 23:24:48,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:24:48,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:24:48,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:48,113 INFO L87 Difference]: Start difference. First operand 15072 states and 21930 transitions. Second operand 7 states. [2020-10-27 23:24:48,403 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:24:50,145 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:24:50,525 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:24:50,863 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:51,276 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:24:51,593 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:24:55,539 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:55,937 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:24:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:58,701 INFO L93 Difference]: Finished difference Result 86344 states and 131698 transitions. [2020-10-27 23:24:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 23:24:58,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-27 23:24:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:58,880 INFO L225 Difference]: With dead ends: 86344 [2020-10-27 23:24:58,880 INFO L226 Difference]: Without dead ends: 73698 [2020-10-27 23:24:58,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:24:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73698 states. [2020-10-27 23:25:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73698 to 43363. [2020-10-27 23:25:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43363 states. [2020-10-27 23:25:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43363 states to 43363 states and 64789 transitions. [2020-10-27 23:25:03,442 INFO L78 Accepts]: Start accepts. Automaton has 43363 states and 64789 transitions. Word has length 111 [2020-10-27 23:25:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:03,442 INFO L481 AbstractCegarLoop]: Abstraction has 43363 states and 64789 transitions. [2020-10-27 23:25:03,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:25:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 43363 states and 64789 transitions. [2020-10-27 23:25:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 23:25:03,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:03,458 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] [2020-10-27 23:25:03,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:25:03,459 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:03,459 INFO L82 PathProgramCache]: Analyzing trace with hash 135692316, now seen corresponding path program 1 times [2020-10-27 23:25:03,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:03,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242730716] [2020-10-27 23:25:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:25:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:25:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:25:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:25:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:25:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 23:25:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:08,813 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:25:08,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:08,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:08,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:25:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:08,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242730716] [2020-10-27 23:25:08,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:08,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:25:08,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380101787] [2020-10-27 23:25:08,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:25:08,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:08,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:25:08,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:25:08,861 INFO L87 Difference]: Start difference. First operand 43363 states and 64789 transitions. Second operand 7 states. [2020-10-27 23:25:09,168 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:25:10,998 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:25:11,282 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:25:11,582 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:25:11,967 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:25:12,279 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 23:25:18,067 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:25:18,377 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:25:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:30,945 INFO L93 Difference]: Finished difference Result 203254 states and 314889 transitions. [2020-10-27 23:25:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 23:25:30,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-27 23:25:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:31,383 INFO L225 Difference]: With dead ends: 203254 [2020-10-27 23:25:31,383 INFO L226 Difference]: Without dead ends: 173716 [2020-10-27 23:25:31,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:25:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173716 states. [2020-10-27 23:25:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173716 to 157968. [2020-10-27 23:25:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157968 states. [2020-10-27 23:25:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157968 states to 157968 states and 245501 transitions. [2020-10-27 23:25:48,429 INFO L78 Accepts]: Start accepts. Automaton has 157968 states and 245501 transitions. Word has length 111 [2020-10-27 23:25:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:48,429 INFO L481 AbstractCegarLoop]: Abstraction has 157968 states and 245501 transitions. [2020-10-27 23:25:48,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:25:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 157968 states and 245501 transitions. [2020-10-27 23:25:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 23:25:48,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:48,448 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] [2020-10-27 23:25:48,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:25:48,448 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1307865847, now seen corresponding path program 1 times [2020-10-27 23:25:48,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:48,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032183212] [2020-10-27 23:25:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:48,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:53,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:53,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 23:25:53,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:25:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 23:25:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:25:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:25:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:25:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:53,811 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:25:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:53,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:53,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032183212] [2020-10-27 23:25:53,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:53,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:25:53,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643921669] [2020-10-27 23:25:53,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:25:53,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:53,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:25:53,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:53,862 INFO L87 Difference]: Start difference. First operand 157968 states and 245501 transitions. Second operand 5 states. [2020-10-27 23:25:55,993 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 23:26:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:13,815 INFO L93 Difference]: Finished difference Result 250671 states and 389916 transitions. [2020-10-27 23:26:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:26:13,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-27 23:26:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:14,294 INFO L225 Difference]: With dead ends: 250671 [2020-10-27 23:26:14,294 INFO L226 Difference]: Without dead ends: 151307 [2020-10-27 23:26:14,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:26:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151307 states.