/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:28:35,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:28:35,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:28:35,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:28:35,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:28:35,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:28:35,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:28:35,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:28:35,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:28:35,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:28:35,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:28:35,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:28:35,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:28:35,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:28:35,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:28:35,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:28:35,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:28:35,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:28:35,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:28:35,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:28:35,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:28:35,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:28:35,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:28:35,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:28:35,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:28:35,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:28:35,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:28:35,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:28:35,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:28:35,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:28:35,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:28:35,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:28:35,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:28:35,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:28:35,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:28:35,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:28:35,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:28:35,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:28:35,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:28:35,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:28:35,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:28:35,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:28:35,543 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:28:35,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:28:35,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:28:35,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:28:35,546 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:28:35,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:28:35,546 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:28:35,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:28:35,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:28:35,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:28:35,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:28:35,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:28:35,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:28:35,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:28:35,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:28:35,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:28:35,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:28:35,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:28:35,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:28:35,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:28:35,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:28:35,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:28:35,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:28:35,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:28:35,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:28:35,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:28:35,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:28:35,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:28:35,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:28:35,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:28:35,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:28:35,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:28:35,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:28:35,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:28:35,992 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:28:35,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-29 13:28:36,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65e87f816/f75dbc1ae950402d967551d5827850e2/FLAG0905badba [2020-10-29 13:28:36,777 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:28:36,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-29 13:28:36,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65e87f816/f75dbc1ae950402d967551d5827850e2/FLAG0905badba [2020-10-29 13:28:37,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65e87f816/f75dbc1ae950402d967551d5827850e2 [2020-10-29 13:28:37,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:28:37,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:28:37,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:28:37,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:28:37,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:28:37,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3eac92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37, skipping insertion in model container [2020-10-29 13:28:37,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:28:37,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:28:37,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:28:37,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:28:37,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:28:37,712 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:28:37,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37 WrapperNode [2020-10-29 13:28:37,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:28:37,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:28:37,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:28:37,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:28:37,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... [2020-10-29 13:28:37,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:28:37,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:28:37,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:28:37,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:28:37,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:28:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:28:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:28:37,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:28:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:28:37,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:28:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:28:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:28:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:28:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:28:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:28:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:28:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:28:39,001 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:28:39,001 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:28:39,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:28:39 BoogieIcfgContainer [2020-10-29 13:28:39,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:28:39,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:28:39,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:28:39,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:28:39,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:28:37" (1/3) ... [2020-10-29 13:28:39,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8df21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:28:39, skipping insertion in model container [2020-10-29 13:28:39,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:28:37" (2/3) ... [2020-10-29 13:28:39,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8df21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:28:39, skipping insertion in model container [2020-10-29 13:28:39,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:28:39" (3/3) ... [2020-10-29 13:28:39,013 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-29 13:28:39,024 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:28:39,030 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:28:39,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:28:39,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:28:39,072 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:28:39,073 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:28:39,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:28:39,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:28:39,073 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:28:39,073 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:28:39,073 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:28:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-29 13:28:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:28:39,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:39,108 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] [2020-10-29 13:28:39,108 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2070299591, now seen corresponding path program 1 times [2020-10-29 13:28:39,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:39,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926525555] [2020-10-29 13:28:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:39,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:44,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:44,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:28:44,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:28:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 13:28:44,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:44,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:28:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:28:45,061 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:45,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 13:28:45,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:45,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:28:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:28:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:28:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:28:45,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926525555] [2020-10-29 13:28:45,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:45,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:28:45,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893915406] [2020-10-29 13:28:45,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:28:45,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:45,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:28:45,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:45,235 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 6 states. [2020-10-29 13:28:45,634 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:28:46,697 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:28:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:47,086 INFO L93 Difference]: Finished difference Result 416 states and 690 transitions. [2020-10-29 13:28:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:28:47,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-29 13:28:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:47,101 INFO L225 Difference]: With dead ends: 416 [2020-10-29 13:28:47,101 INFO L226 Difference]: Without dead ends: 272 [2020-10-29 13:28:47,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-29 13:28:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 269. [2020-10-29 13:28:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-29 13:28:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 385 transitions. [2020-10-29 13:28:47,178 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 385 transitions. Word has length 96 [2020-10-29 13:28:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:47,179 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 385 transitions. [2020-10-29 13:28:47,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 385 transitions. [2020-10-29 13:28:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:28:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:47,184 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] [2020-10-29 13:28:47,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:28:47,184 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:47,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1564295992, now seen corresponding path program 1 times [2020-10-29 13:28:47,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:47,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064914378] [2020-10-29 13:28:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:52,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:28:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:28:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:28:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:52,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:28:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:28:52,598 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:52,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:52,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:52,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:28:52,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:52,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:28:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:52,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:28:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:28:52,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064914378] [2020-10-29 13:28:52,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:52,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:28:52,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725821566] [2020-10-29 13:28:52,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:28:52,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:52,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:28:52,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:52,687 INFO L87 Difference]: Start difference. First operand 269 states and 385 transitions. Second operand 6 states. [2020-10-29 13:28:53,019 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:28:53,656 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:28:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:54,039 INFO L93 Difference]: Finished difference Result 607 states and 913 transitions. [2020-10-29 13:28:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:28:54,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-29 13:28:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:54,044 INFO L225 Difference]: With dead ends: 607 [2020-10-29 13:28:54,044 INFO L226 Difference]: Without dead ends: 409 [2020-10-29 13:28:54,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-29 13:28:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2020-10-29 13:28:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-29 13:28:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 599 transitions. [2020-10-29 13:28:54,101 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 599 transitions. Word has length 97 [2020-10-29 13:28:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:54,101 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 599 transitions. [2020-10-29 13:28:54,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 599 transitions. [2020-10-29 13:28:54,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:28:54,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:54,104 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] [2020-10-29 13:28:54,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:28:54,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:54,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:54,105 INFO L82 PathProgramCache]: Analyzing trace with hash 498340441, now seen corresponding path program 1 times [2020-10-29 13:28:54,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:54,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844846119] [2020-10-29 13:28:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:58,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:59,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:28:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:28:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:28:59,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:59,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:28:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:59,501 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:59,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:28:59,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:59,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:28:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:28:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:28:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:28:59,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844846119] [2020-10-29 13:28:59,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:59,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:28:59,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640898246] [2020-10-29 13:28:59,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:28:59,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:28:59,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:59,582 INFO L87 Difference]: Start difference. First operand 406 states and 599 transitions. Second operand 6 states. [2020-10-29 13:28:59,844 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:29:00,516 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:29:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:00,961 INFO L93 Difference]: Finished difference Result 1058 states and 1615 transitions. [2020-10-29 13:29:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:29:00,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-29 13:29:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:00,967 INFO L225 Difference]: With dead ends: 1058 [2020-10-29 13:29:00,967 INFO L226 Difference]: Without dead ends: 711 [2020-10-29 13:29:00,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-29 13:29:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 708. [2020-10-29 13:29:01,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-29 13:29:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1070 transitions. [2020-10-29 13:29:01,036 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1070 transitions. Word has length 98 [2020-10-29 13:29:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:01,036 INFO L481 AbstractCegarLoop]: Abstraction has 708 states and 1070 transitions. [2020-10-29 13:29:01,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1070 transitions. [2020-10-29 13:29:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:29:01,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:01,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:01,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:29:01,040 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash -632790761, now seen corresponding path program 1 times [2020-10-29 13:29:01,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:01,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516440707] [2020-10-29 13:29:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:06,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:06,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:29:06,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:29:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:29:06,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:06,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:06,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:29:06,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:06,393 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:06,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:06,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:06,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:29:06,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:06,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:06,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516440707] [2020-10-29 13:29:06,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:06,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:06,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524898971] [2020-10-29 13:29:06,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:06,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:06,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:06,505 INFO L87 Difference]: Start difference. First operand 708 states and 1070 transitions. Second operand 6 states. [2020-10-29 13:29:06,785 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:29:07,437 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:29:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:07,850 INFO L93 Difference]: Finished difference Result 1936 states and 2985 transitions. [2020-10-29 13:29:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:29:07,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 13:29:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:07,860 INFO L225 Difference]: With dead ends: 1936 [2020-10-29 13:29:07,861 INFO L226 Difference]: Without dead ends: 1291 [2020-10-29 13:29:07,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-10-29 13:29:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1288. [2020-10-29 13:29:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-10-29 13:29:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1969 transitions. [2020-10-29 13:29:07,974 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1969 transitions. Word has length 99 [2020-10-29 13:29:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:07,974 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1969 transitions. [2020-10-29 13:29:07,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1969 transitions. [2020-10-29 13:29:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:29:07,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:07,979 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] [2020-10-29 13:29:07,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:29:07,979 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:07,980 INFO L82 PathProgramCache]: Analyzing trace with hash 328208906, now seen corresponding path program 1 times [2020-10-29 13:29:07,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:07,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18814116] [2020-10-29 13:29:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:09,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:13,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:29:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:29:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:29:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:13,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:29:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:13,305 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:13,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:13,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:13,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:29:13,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:13,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:13,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18814116] [2020-10-29 13:29:13,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:13,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:13,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160231413] [2020-10-29 13:29:13,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:13,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:13,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:13,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:13,380 INFO L87 Difference]: Start difference. First operand 1288 states and 1969 transitions. Second operand 6 states. [2020-10-29 13:29:13,632 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:29:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:14,369 INFO L93 Difference]: Finished difference Result 2509 states and 3869 transitions. [2020-10-29 13:29:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:29:14,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-29 13:29:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:14,377 INFO L225 Difference]: With dead ends: 2509 [2020-10-29 13:29:14,377 INFO L226 Difference]: Without dead ends: 1288 [2020-10-29 13:29:14,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-10-29 13:29:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2020-10-29 13:29:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-10-29 13:29:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1952 transitions. [2020-10-29 13:29:14,484 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1952 transitions. Word has length 100 [2020-10-29 13:29:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:14,485 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1952 transitions. [2020-10-29 13:29:14,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:14,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1952 transitions. [2020-10-29 13:29:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:29:14,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:14,487 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] [2020-10-29 13:29:14,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:29:14,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1632832090, now seen corresponding path program 1 times [2020-10-29 13:29:14,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:14,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177262293] [2020-10-29 13:29:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:19,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:19,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:29:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:29:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:19,931 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:19,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:19,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:19,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:19,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177262293] [2020-10-29 13:29:20,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:20,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:29:20,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890988245] [2020-10-29 13:29:20,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:29:20,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:20,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:29:20,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:29:20,003 INFO L87 Difference]: Start difference. First operand 1288 states and 1952 transitions. Second operand 8 states. [2020-10-29 13:29:20,301 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:29:21,184 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:29:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:21,837 INFO L93 Difference]: Finished difference Result 3037 states and 4656 transitions. [2020-10-29 13:29:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:29:21,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-29 13:29:21,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:21,849 INFO L225 Difference]: With dead ends: 3037 [2020-10-29 13:29:21,849 INFO L226 Difference]: Without dead ends: 1831 [2020-10-29 13:29:21,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:29:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-10-29 13:29:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1288. [2020-10-29 13:29:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-10-29 13:29:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1951 transitions. [2020-10-29 13:29:22,021 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1951 transitions. Word has length 101 [2020-10-29 13:29:22,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:22,022 INFO L481 AbstractCegarLoop]: Abstraction has 1288 states and 1951 transitions. [2020-10-29 13:29:22,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:29:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1951 transitions. [2020-10-29 13:29:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:29:22,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:22,023 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] [2020-10-29 13:29:22,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:29:22,024 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:22,024 INFO L82 PathProgramCache]: Analyzing trace with hash -918550525, now seen corresponding path program 1 times [2020-10-29 13:29:22,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:22,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709849433] [2020-10-29 13:29:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:22,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:22,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:22,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:27,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:27,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:29:27,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:29:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:29:27,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:27,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:29:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:29:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:29:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:27,398 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:27,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:27,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:27,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:27,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:29:27,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:27,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:27,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709849433] [2020-10-29 13:29:27,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:27,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:29:27,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707564290] [2020-10-29 13:29:27,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:29:27,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:27,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:29:27,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:27,463 INFO L87 Difference]: Start difference. First operand 1288 states and 1951 transitions. Second operand 9 states. [2020-10-29 13:29:27,781 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:29:28,750 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:29:29,047 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:29:29,306 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:29:29,547 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:29:29,785 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:29:30,133 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:29:30,429 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:29:30,759 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:29:31,027 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:29:31,314 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:29:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:33,088 INFO L93 Difference]: Finished difference Result 14552 states and 22487 transitions. [2020-10-29 13:29:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:29:33,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-29 13:29:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:33,160 INFO L225 Difference]: With dead ends: 14552 [2020-10-29 13:29:33,160 INFO L226 Difference]: Without dead ends: 13477 [2020-10-29 13:29:33,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-29 13:29:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13477 states. [2020-10-29 13:29:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13477 to 2491. [2020-10-29 13:29:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2020-10-29 13:29:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 3783 transitions. [2020-10-29 13:29:33,657 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 3783 transitions. Word has length 102 [2020-10-29 13:29:33,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:33,658 INFO L481 AbstractCegarLoop]: Abstraction has 2491 states and 3783 transitions. [2020-10-29 13:29:33,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:29:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 3783 transitions. [2020-10-29 13:29:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:29:33,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:33,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:33,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:29:33,661 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:33,662 INFO L82 PathProgramCache]: Analyzing trace with hash 659889990, now seen corresponding path program 1 times [2020-10-29 13:29:33,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:33,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898591062] [2020-10-29 13:29:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:33,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:35,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:37,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:38,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:29:38,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:29:38,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:29:38,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:38,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:38,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:38,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:29:38,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 13:29:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:38,980 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:38,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:38,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:29:38,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:38,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:39,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898591062] [2020-10-29 13:29:39,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:39,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:29:39,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861611446] [2020-10-29 13:29:39,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:39,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:39,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:39,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:39,032 INFO L87 Difference]: Start difference. First operand 2491 states and 3783 transitions. Second operand 6 states. [2020-10-29 13:29:39,325 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:29:40,021 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:29:40,327 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:29:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:41,222 INFO L93 Difference]: Finished difference Result 6835 states and 10453 transitions. [2020-10-29 13:29:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:29:41,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:29:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:41,245 INFO L225 Difference]: With dead ends: 6835 [2020-10-29 13:29:41,245 INFO L226 Difference]: Without dead ends: 4688 [2020-10-29 13:29:41,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:29:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4688 states. [2020-10-29 13:29:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4688 to 4682. [2020-10-29 13:29:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4682 states. [2020-10-29 13:29:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 7119 transitions. [2020-10-29 13:29:41,956 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 7119 transitions. Word has length 103 [2020-10-29 13:29:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:41,956 INFO L481 AbstractCegarLoop]: Abstraction has 4682 states and 7119 transitions. [2020-10-29 13:29:41,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 7119 transitions. [2020-10-29 13:29:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:29:41,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:41,959 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] [2020-10-29 13:29:41,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:29:41,959 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:41,960 INFO L82 PathProgramCache]: Analyzing trace with hash -233735804, now seen corresponding path program 1 times [2020-10-29 13:29:41,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:41,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122421446] [2020-10-29 13:29:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:42,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:44,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:45,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:46,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:47,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:29:47,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:29:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:29:47,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:47,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:29:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:29:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:29:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:47,401 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:47,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:47,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:47,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:47,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122421446] [2020-10-29 13:29:47,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:47,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:29:47,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615650201] [2020-10-29 13:29:47,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:29:47,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:29:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:47,454 INFO L87 Difference]: Start difference. First operand 4682 states and 7119 transitions. Second operand 9 states. [2020-10-29 13:29:47,761 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:29:48,804 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:29:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:50,127 INFO L93 Difference]: Finished difference Result 11268 states and 17147 transitions. [2020-10-29 13:29:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:29:50,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:29:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:50,148 INFO L225 Difference]: With dead ends: 11268 [2020-10-29 13:29:50,148 INFO L226 Difference]: Without dead ends: 6877 [2020-10-29 13:29:50,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:29:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2020-10-29 13:29:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 4682. [2020-10-29 13:29:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4682 states. [2020-10-29 13:29:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 7114 transitions. [2020-10-29 13:29:50,812 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 7114 transitions. Word has length 104 [2020-10-29 13:29:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:50,812 INFO L481 AbstractCegarLoop]: Abstraction has 4682 states and 7114 transitions. [2020-10-29 13:29:50,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:29:50,812 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 7114 transitions. [2020-10-29 13:29:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:29:50,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:50,815 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] [2020-10-29 13:29:50,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:29:50,816 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:50,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:50,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1374930957, now seen corresponding path program 1 times [2020-10-29 13:29:50,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:50,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366878413] [2020-10-29 13:29:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:51,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:52,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:53,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:55,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:29:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:29:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:56,442 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:56,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:56,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:56,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:56,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366878413] [2020-10-29 13:29:56,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:56,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:29:56,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24252152] [2020-10-29 13:29:56,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:29:56,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:56,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:29:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:56,495 INFO L87 Difference]: Start difference. First operand 4682 states and 7114 transitions. Second operand 9 states. [2020-10-29 13:29:56,811 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:29:57,962 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:29:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:59,466 INFO L93 Difference]: Finished difference Result 11266 states and 17125 transitions. [2020-10-29 13:29:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:29:59,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:29:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:59,480 INFO L225 Difference]: With dead ends: 11266 [2020-10-29 13:29:59,480 INFO L226 Difference]: Without dead ends: 6877 [2020-10-29 13:29:59,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:29:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2020-10-29 13:30:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 4682. [2020-10-29 13:30:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4682 states. [2020-10-29 13:30:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 7091 transitions. [2020-10-29 13:30:00,183 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 7091 transitions. Word has length 104 [2020-10-29 13:30:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:00,184 INFO L481 AbstractCegarLoop]: Abstraction has 4682 states and 7091 transitions. [2020-10-29 13:30:00,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:30:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 7091 transitions. [2020-10-29 13:30:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:30:00,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:00,187 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] [2020-10-29 13:30:00,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:30:00,187 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash -11419652, now seen corresponding path program 1 times [2020-10-29 13:30:00,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:00,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298490526] [2020-10-29 13:30:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:30:05,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:30:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:30:05,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:05,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:30:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:30:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 13:30:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:05,632 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:05,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:05,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:05,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298490526] [2020-10-29 13:30:05,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:05,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:30:05,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296615807] [2020-10-29 13:30:05,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:30:05,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:05,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:30:05,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:05,692 INFO L87 Difference]: Start difference. First operand 4682 states and 7091 transitions. Second operand 9 states. [2020-10-29 13:30:06,004 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:30:07,157 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:30:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:08,805 INFO L93 Difference]: Finished difference Result 11243 states and 17068 transitions. [2020-10-29 13:30:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:30:08,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-29 13:30:08,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:08,821 INFO L225 Difference]: With dead ends: 11243 [2020-10-29 13:30:08,821 INFO L226 Difference]: Without dead ends: 6877 [2020-10-29 13:30:08,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:30:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6877 states. [2020-10-29 13:30:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6877 to 4682. [2020-10-29 13:30:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4682 states. [2020-10-29 13:30:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 7080 transitions. [2020-10-29 13:30:09,752 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 7080 transitions. Word has length 105 [2020-10-29 13:30:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:09,752 INFO L481 AbstractCegarLoop]: Abstraction has 4682 states and 7080 transitions. [2020-10-29 13:30:09,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:30:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 7080 transitions. [2020-10-29 13:30:09,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:30:09,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:09,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:09,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:30:09,760 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:09,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1617591843, now seen corresponding path program 1 times [2020-10-29 13:30:09,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:09,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606460050] [2020-10-29 13:30:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:14,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:14,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:30:14,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:30:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:30:14,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:14,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:30:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 13:30:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:15,133 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:15,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:15,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606460050] [2020-10-29 13:30:15,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:15,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:30:15,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911257039] [2020-10-29 13:30:15,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:15,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:15,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:15,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:15,183 INFO L87 Difference]: Start difference. First operand 4682 states and 7080 transitions. Second operand 6 states. [2020-10-29 13:30:15,505 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:30:16,314 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:16,646 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:30:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:18,452 INFO L93 Difference]: Finished difference Result 12477 states and 18944 transitions. [2020-10-29 13:30:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:30:18,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:30:18,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:18,473 INFO L225 Difference]: With dead ends: 12477 [2020-10-29 13:30:18,474 INFO L226 Difference]: Without dead ends: 8250 [2020-10-29 13:30:18,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:30:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8250 states. [2020-10-29 13:30:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8250 to 6884. [2020-10-29 13:30:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6884 states. [2020-10-29 13:30:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 10458 transitions. [2020-10-29 13:30:19,752 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 10458 transitions. Word has length 106 [2020-10-29 13:30:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:19,752 INFO L481 AbstractCegarLoop]: Abstraction has 6884 states and 10458 transitions. [2020-10-29 13:30:19,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 10458 transitions. [2020-10-29 13:30:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:30:19,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:19,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:19,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:30:19,756 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:19,757 INFO L82 PathProgramCache]: Analyzing trace with hash 705182338, now seen corresponding path program 1 times [2020-10-29 13:30:19,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:19,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389282769] [2020-10-29 13:30:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:19,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:24,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:30:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:25,060 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:25,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:25,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:25,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:25,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:30:25,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:25,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:25,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:25,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:25,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:25,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389282769] [2020-10-29 13:30:25,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:25,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:30:25,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723642079] [2020-10-29 13:30:25,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:25,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:25,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:25,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:25,111 INFO L87 Difference]: Start difference. First operand 6884 states and 10458 transitions. Second operand 6 states. [2020-10-29 13:30:25,391 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:30:26,134 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:26,433 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:30:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:28,535 INFO L93 Difference]: Finished difference Result 16117 states and 24492 transitions. [2020-10-29 13:30:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:30:28,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:30:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:28,554 INFO L225 Difference]: With dead ends: 16117 [2020-10-29 13:30:28,554 INFO L226 Difference]: Without dead ends: 9746 [2020-10-29 13:30:28,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:30:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2020-10-29 13:30:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 8004. [2020-10-29 13:30:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8004 states. [2020-10-29 13:30:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 12174 transitions. [2020-10-29 13:30:30,140 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 12174 transitions. Word has length 106 [2020-10-29 13:30:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:30,140 INFO L481 AbstractCegarLoop]: Abstraction has 8004 states and 12174 transitions. [2020-10-29 13:30:30,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 12174 transitions. [2020-10-29 13:30:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:30:30,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:30,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:30,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:30:30,143 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:30,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1796910689, now seen corresponding path program 1 times [2020-10-29 13:30:30,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:30,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241149826] [2020-10-29 13:30:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:35,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:30:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:30:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:35,442 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:30:35,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:35,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:35,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241149826] [2020-10-29 13:30:35,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:35,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:30:35,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443321786] [2020-10-29 13:30:35,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:35,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:35,482 INFO L87 Difference]: Start difference. First operand 8004 states and 12174 transitions. Second operand 6 states. [2020-10-29 13:30:35,744 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:30:36,536 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:36,843 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:30:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:39,142 INFO L93 Difference]: Finished difference Result 18533 states and 28164 transitions. [2020-10-29 13:30:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:30:39,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:30:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:39,159 INFO L225 Difference]: With dead ends: 18533 [2020-10-29 13:30:39,159 INFO L226 Difference]: Without dead ends: 11090 [2020-10-29 13:30:39,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:30:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11090 states. [2020-10-29 13:30:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11090 to 9132. [2020-10-29 13:30:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9132 states. [2020-10-29 13:30:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 13902 transitions. [2020-10-29 13:30:40,929 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 13902 transitions. Word has length 106 [2020-10-29 13:30:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:40,930 INFO L481 AbstractCegarLoop]: Abstraction has 9132 states and 13902 transitions. [2020-10-29 13:30:40,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 13902 transitions. [2020-10-29 13:30:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:30:40,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:40,933 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] [2020-10-29 13:30:40,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:30:40,933 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1868363493, now seen corresponding path program 1 times [2020-10-29 13:30:40,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:40,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751416897] [2020-10-29 13:30:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:45,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:45,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:30:45,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:30:45,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:30:45,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:45,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:30:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:30:45,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:30:45,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:46,169 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 18 [2020-10-29 13:30:46,438 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:46,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:46,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751416897] [2020-10-29 13:30:46,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:46,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:30:46,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081764964] [2020-10-29 13:30:46,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:30:46,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:46,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:30:46,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:46,483 INFO L87 Difference]: Start difference. First operand 9132 states and 13902 transitions. Second operand 10 states. [2020-10-29 13:30:46,766 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:30:48,071 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:30:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:50,816 INFO L93 Difference]: Finished difference Result 21981 states and 33583 transitions. [2020-10-29 13:30:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:30:50,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-10-29 13:30:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:50,831 INFO L225 Difference]: With dead ends: 21981 [2020-10-29 13:30:50,832 INFO L226 Difference]: Without dead ends: 13370 [2020-10-29 13:30:50,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:30:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13370 states. [2020-10-29 13:30:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13370 to 9079. [2020-10-29 13:30:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9079 states. [2020-10-29 13:30:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9079 states to 9079 states and 13814 transitions. [2020-10-29 13:30:52,860 INFO L78 Accepts]: Start accepts. Automaton has 9079 states and 13814 transitions. Word has length 107 [2020-10-29 13:30:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:52,860 INFO L481 AbstractCegarLoop]: Abstraction has 9079 states and 13814 transitions. [2020-10-29 13:30:52,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:30:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9079 states and 13814 transitions. [2020-10-29 13:30:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:30:52,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:52,863 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] [2020-10-29 13:30:52,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:30:52,863 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:52,864 INFO L82 PathProgramCache]: Analyzing trace with hash -776635142, now seen corresponding path program 1 times [2020-10-29 13:30:52,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:52,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449475806] [2020-10-29 13:30:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:52,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:53,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:57,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:30:57,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:30:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:30:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:57,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:30:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:30:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:30:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:58,471 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:58,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:58,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:58,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:58,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449475806] [2020-10-29 13:30:58,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:58,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:30:58,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680576359] [2020-10-29 13:30:58,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:30:58,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:58,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:30:58,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:58,561 INFO L87 Difference]: Start difference. First operand 9079 states and 13814 transitions. Second operand 10 states. [2020-10-29 13:30:59,194 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 206 [2020-10-29 13:31:00,436 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 13:31:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:03,600 INFO L93 Difference]: Finished difference Result 21928 states and 33494 transitions. [2020-10-29 13:31:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:31:03,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-10-29 13:31:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:03,613 INFO L225 Difference]: With dead ends: 21928 [2020-10-29 13:31:03,614 INFO L226 Difference]: Without dead ends: 13297 [2020-10-29 13:31:03,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:31:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2020-10-29 13:31:05,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 9006. [2020-10-29 13:31:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9006 states. [2020-10-29 13:31:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 13709 transitions. [2020-10-29 13:31:05,756 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 13709 transitions. Word has length 107 [2020-10-29 13:31:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:05,756 INFO L481 AbstractCegarLoop]: Abstraction has 9006 states and 13709 transitions. [2020-10-29 13:31:05,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:31:05,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 13709 transitions. [2020-10-29 13:31:05,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:31:05,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:05,759 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] [2020-10-29 13:31:05,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:31:05,759 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:05,760 INFO L82 PathProgramCache]: Analyzing trace with hash -587126246, now seen corresponding path program 1 times [2020-10-29 13:31:05,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:05,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901937644] [2020-10-29 13:31:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:05,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:07,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:31:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:31:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 13:31:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:11,163 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:31:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:11,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:11,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:11,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901937644] [2020-10-29 13:31:11,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:11,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:31:11,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103798813] [2020-10-29 13:31:11,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:31:11,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:11,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:31:11,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:11,232 INFO L87 Difference]: Start difference. First operand 9006 states and 13709 transitions. Second operand 9 states. [2020-10-29 13:31:11,621 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:31:12,790 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:31:13,072 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:31:13,442 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:31:13,834 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:31:14,123 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:31:14,493 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:31:19,648 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:31:19,938 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:31:20,488 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:31:20,813 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:31:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:24,843 INFO L93 Difference]: Finished difference Result 48401 states and 74043 transitions. [2020-10-29 13:31:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:31:24,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-29 13:31:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:24,893 INFO L225 Difference]: With dead ends: 48401 [2020-10-29 13:31:24,894 INFO L226 Difference]: Without dead ends: 39886 [2020-10-29 13:31:24,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-29 13:31:24,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39886 states. [2020-10-29 13:31:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39886 to 9006. [2020-10-29 13:31:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9006 states. [2020-10-29 13:31:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 13693 transitions. [2020-10-29 13:31:27,440 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 13693 transitions. Word has length 107 [2020-10-29 13:31:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:27,441 INFO L481 AbstractCegarLoop]: Abstraction has 9006 states and 13693 transitions. [2020-10-29 13:31:27,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:31:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 13693 transitions. [2020-10-29 13:31:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:31:27,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:27,443 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] [2020-10-29 13:31:27,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:31:27,443 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 525058809, now seen corresponding path program 1 times [2020-10-29 13:31:27,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:27,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821453360] [2020-10-29 13:31:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:27,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:32,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 13:31:32,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:32,762 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:31:32,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:32,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:32,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821453360] [2020-10-29 13:31:32,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:32,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:31:32,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631368264] [2020-10-29 13:31:32,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:31:32,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:31:32,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:31:32,811 INFO L87 Difference]: Start difference. First operand 9006 states and 13693 transitions. Second operand 5 states. [2020-10-29 13:31:33,138 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:31:33,909 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:31:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:38,082 INFO L93 Difference]: Finished difference Result 24340 states and 37009 transitions. [2020-10-29 13:31:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:31:38,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-29 13:31:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:38,098 INFO L225 Difference]: With dead ends: 24340 [2020-10-29 13:31:38,098 INFO L226 Difference]: Without dead ends: 15825 [2020-10-29 13:31:38,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:31:38,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15825 states. [2020-10-29 13:31:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15825 to 15822. [2020-10-29 13:31:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15822 states. [2020-10-29 13:31:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15822 states to 15822 states and 23853 transitions. [2020-10-29 13:31:42,016 INFO L78 Accepts]: Start accepts. Automaton has 15822 states and 23853 transitions. Word has length 107 [2020-10-29 13:31:42,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:42,016 INFO L481 AbstractCegarLoop]: Abstraction has 15822 states and 23853 transitions. [2020-10-29 13:31:42,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:31:42,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15822 states and 23853 transitions. [2020-10-29 13:31:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:31:42,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:42,018 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] [2020-10-29 13:31:42,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:31:42,018 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:42,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:42,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1498152691, now seen corresponding path program 1 times [2020-10-29 13:31:42,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:42,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896915529] [2020-10-29 13:31:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:42,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:47,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:31:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:31:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:31:47,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:47,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:31:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 13:31:47,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:47,331 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:31:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:47,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:47,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896915529] [2020-10-29 13:31:47,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:47,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:31:47,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748768207] [2020-10-29 13:31:47,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:47,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:47,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:47,365 INFO L87 Difference]: Start difference. First operand 15822 states and 23853 transitions. Second operand 6 states. [2020-10-29 13:31:47,649 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:31:48,432 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:31:48,759 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:31:54,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:54,409 INFO L93 Difference]: Finished difference Result 35471 states and 53339 transitions. [2020-10-29 13:31:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:31:54,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-29 13:31:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:54,429 INFO L225 Difference]: With dead ends: 35471 [2020-10-29 13:31:54,429 INFO L226 Difference]: Without dead ends: 21116 [2020-10-29 13:31:54,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:31:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21116 states. [2020-10-29 13:31:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21116 to 17878. [2020-10-29 13:31:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17878 states. [2020-10-29 13:31:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17878 states to 17878 states and 26965 transitions. [2020-10-29 13:31:59,116 INFO L78 Accepts]: Start accepts. Automaton has 17878 states and 26965 transitions. Word has length 107 [2020-10-29 13:31:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:59,116 INFO L481 AbstractCegarLoop]: Abstraction has 17878 states and 26965 transitions. [2020-10-29 13:31:59,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17878 states and 26965 transitions. [2020-10-29 13:31:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:31:59,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:59,118 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] [2020-10-29 13:31:59,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 13:31:59,119 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:59,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1148966575, now seen corresponding path program 1 times [2020-10-29 13:31:59,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:59,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792784107] [2020-10-29 13:31:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:01,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:32:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 13:32:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:04,430 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:32:04,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:04,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:04,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792784107] [2020-10-29 13:32:04,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:04,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:32:04,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191189357] [2020-10-29 13:32:04,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:04,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:04,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:04,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:04,469 INFO L87 Difference]: Start difference. First operand 17878 states and 26965 transitions. Second operand 6 states. [2020-10-29 13:32:04,753 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:32:05,567 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:32:05,833 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:32:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:12,659 INFO L93 Difference]: Finished difference Result 40990 states and 61633 transitions. [2020-10-29 13:32:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:32:12,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2020-10-29 13:32:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:12,681 INFO L225 Difference]: With dead ends: 40990 [2020-10-29 13:32:12,682 INFO L226 Difference]: Without dead ends: 24587 [2020-10-29 13:32:12,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:32:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24587 states. [2020-10-29 13:32:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24587 to 19989. [2020-10-29 13:32:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19989 states. [2020-10-29 13:32:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19989 states to 19989 states and 30155 transitions. [2020-10-29 13:32:17,887 INFO L78 Accepts]: Start accepts. Automaton has 19989 states and 30155 transitions. Word has length 107 [2020-10-29 13:32:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:17,887 INFO L481 AbstractCegarLoop]: Abstraction has 19989 states and 30155 transitions. [2020-10-29 13:32:17,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 19989 states and 30155 transitions. [2020-10-29 13:32:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:32:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:17,889 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] [2020-10-29 13:32:17,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 13:32:17,890 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash -25400284, now seen corresponding path program 1 times [2020-10-29 13:32:17,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:17,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352996947] [2020-10-29 13:32:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking...