/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:54:58,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:54:58,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:54:58,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:54:58,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:54:58,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:54:58,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:54:58,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:54:59,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:54:59,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:54:59,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:54:59,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:54:59,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:54:59,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:54:59,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:54:59,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:54:59,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:54:59,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:54:59,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:54:59,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:54:59,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:54:59,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:54:59,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:54:59,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:54:59,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:54:59,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:54:59,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:54:59,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:54:59,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:54:59,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:54:59,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:54:59,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:54:59,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:54:59,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:54:59,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:54:59,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:54:59,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:54:59,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:54:59,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:54:59,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:54:59,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:54:59,052 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 [2020-10-28 17:54:59,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:54:59,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:54:59,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:54:59,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:54:59,082 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:54:59,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:54:59,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:54:59,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:54:59,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:54:59,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:54:59,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:54:59,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:54:59,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:54:59,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:54:59,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:54:59,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:54:59,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:54:59,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:54:59,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:54:59,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:54:59,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:54:59,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:54:59,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:54:59,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:54:59,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:54:59,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:54:59,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:54:59,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:54:59,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:54:59,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:54:59,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:54:59,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:54:59,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:54:59,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:54:59,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:54:59,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-28 17:54:59,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f52f243b/b6716518a95641c4826a0c3501254e7c/FLAG9aebf95f1 [2020-10-28 17:55:00,416 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:55:00,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-28 17:55:00,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f52f243b/b6716518a95641c4826a0c3501254e7c/FLAG9aebf95f1 [2020-10-28 17:55:00,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f52f243b/b6716518a95641c4826a0c3501254e7c [2020-10-28 17:55:00,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:55:00,742 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:55:00,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:55:00,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:55:00,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:55:00,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:55:00" (1/1) ... [2020-10-28 17:55:00,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de7a8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:00, skipping insertion in model container [2020-10-28 17:55:00,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:55:00" (1/1) ... [2020-10-28 17:55:00,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:55:00,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:55:01,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:55:01,093 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:55:01,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:55:01,289 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:55:01,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01 WrapperNode [2020-10-28 17:55:01,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:55:01,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:55:01,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:55:01,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:55:01,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (1/1) ... [2020-10-28 17:55:01,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:55:01,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:55:01,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:55:01,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:55:01,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (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 [2020-10-28 17:55:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:55:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:55:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:55:01,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:55:01,483 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:55:01,483 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:55:01,484 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:55:01,484 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:55:01,484 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:55:01,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:55:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:55:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:55:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:55:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:55:01,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:55:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:55:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:55:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:55:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:55:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:55:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:55:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:55:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:55:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:55:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:55:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:55:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:55:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:55:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:55:02,652 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:55:02,653 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:55:02,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:55:02 BoogieIcfgContainer [2020-10-28 17:55:02,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:55:02,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:55:02,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:55:02,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:55:02,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:55:00" (1/3) ... [2020-10-28 17:55:02,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4eb3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:55:02, skipping insertion in model container [2020-10-28 17:55:02,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:01" (2/3) ... [2020-10-28 17:55:02,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4eb3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:55:02, skipping insertion in model container [2020-10-28 17:55:02,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:55:02" (3/3) ... [2020-10-28 17:55:02,665 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-28 17:55:02,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:55:02,685 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:55:02,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:55:02,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:55:02,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:55:02,728 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:55:02,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:55:02,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:55:02,729 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:55:02,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:55:02,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:55:02,752 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-10-28 17:55:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:55:02,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:02,766 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] [2020-10-28 17:55:02,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1910617669, now seen corresponding path program 1 times [2020-10-28 17:55:02,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:02,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737214160] [2020-10-28 17:55:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:03,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:03,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:55:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-28 17:55:03,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:03,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:55:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:55:04,163 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:04,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:55:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:55:04,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:55:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:55:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:04,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:04,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:55:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 17:55:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:55:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:55:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:55:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:04,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:55:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 17:55:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:55:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:04,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:55:04,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:04,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:04,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:04,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:55:04,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:04,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:04,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:04,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:04,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737214160] [2020-10-28 17:55:04,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:04,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:55:04,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727745105] [2020-10-28 17:55:04,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:55:04,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:04,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:55:04,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:55:04,637 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 6 states. [2020-10-28 17:55:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:06,428 INFO L93 Difference]: Finished difference Result 301 states and 474 transitions. [2020-10-28 17:55:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:55:06,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 17:55:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:06,455 INFO L225 Difference]: With dead ends: 301 [2020-10-28 17:55:06,455 INFO L226 Difference]: Without dead ends: 187 [2020-10-28 17:55:06,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-28 17:55:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-10-28 17:55:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 17:55:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 268 transitions. [2020-10-28 17:55:06,561 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 268 transitions. Word has length 66 [2020-10-28 17:55:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:06,561 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 268 transitions. [2020-10-28 17:55:06,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:55:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 268 transitions. [2020-10-28 17:55:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:55:06,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:06,571 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] [2020-10-28 17:55:06,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:55:06,572 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash 538982461, now seen corresponding path program 1 times [2020-10-28 17:55:06,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:06,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563032178] [2020-10-28 17:55:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:07,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:07,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:55:07,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-28 17:55:07,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:55:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:55:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:55:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:07,924 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:07,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:07,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:07,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:55:07,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:07,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:07,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:07,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:08,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:08,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:55:08,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 17:55:08,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:08,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:55:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:55:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:08,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:55:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:55:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:55:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:08,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:08,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:08,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:55:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:08,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:55:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:55:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:08,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:08,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:08,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:08,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:08,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:55:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:08,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:08,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:08,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:55:08,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:08,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:08,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:55:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:08,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:08,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563032178] [2020-10-28 17:55:08,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:08,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:55:08,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144326231] [2020-10-28 17:55:08,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:55:08,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:08,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:55:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:55:08,365 INFO L87 Difference]: Start difference. First operand 169 states and 268 transitions. Second operand 12 states. [2020-10-28 17:55:09,022 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:55:09,398 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:55:09,864 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:10,225 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:12,092 INFO L93 Difference]: Finished difference Result 296 states and 462 transitions. [2020-10-28 17:55:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:55:12,094 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-28 17:55:12,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:12,099 INFO L225 Difference]: With dead ends: 296 [2020-10-28 17:55:12,100 INFO L226 Difference]: Without dead ends: 187 [2020-10-28 17:55:12,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:55:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-28 17:55:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-10-28 17:55:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 17:55:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 244 transitions. [2020-10-28 17:55:12,159 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 244 transitions. Word has length 66 [2020-10-28 17:55:12,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:12,160 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 244 transitions. [2020-10-28 17:55:12,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:55:12,160 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 244 transitions. [2020-10-28 17:55:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:55:12,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:12,164 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] [2020-10-28 17:55:12,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:55:12,164 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1061925819, now seen corresponding path program 1 times [2020-10-28 17:55:12,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:12,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053365567] [2020-10-28 17:55:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:17,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:17,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 17:55:17,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:55:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 17:55:17,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:17,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:55:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 17:55:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:17,691 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:55:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:17,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:17,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:17,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:55:17,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 17:55:17,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:17,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:55:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:55:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:17,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:17,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:17,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:17,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:55:17,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:17,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:17,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:17,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:17,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:17,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:55:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:17,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:17,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:17,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:17,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:17,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:55:17,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:17,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:17,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:55:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:17,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:55:17,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:17,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:17,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:55:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:18,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:18,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:18,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:55:18,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:18,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:55:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:55:18,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:55:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:18,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:18,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:18,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053365567] [2020-10-28 17:55:18,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:18,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:18,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694966921] [2020-10-28 17:55:18,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:18,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:18,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:18,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:18,116 INFO L87 Difference]: Start difference. First operand 169 states and 244 transitions. Second operand 9 states. [2020-10-28 17:55:18,500 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:21,110 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:21,584 INFO L93 Difference]: Finished difference Result 417 states and 626 transitions. [2020-10-28 17:55:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:55:21,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-28 17:55:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:21,592 INFO L225 Difference]: With dead ends: 417 [2020-10-28 17:55:21,592 INFO L226 Difference]: Without dead ends: 314 [2020-10-28 17:55:21,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:55:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-28 17:55:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 271. [2020-10-28 17:55:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-28 17:55:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 403 transitions. [2020-10-28 17:55:21,648 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 403 transitions. Word has length 89 [2020-10-28 17:55:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:21,649 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 403 transitions. [2020-10-28 17:55:21,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:21,649 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 403 transitions. [2020-10-28 17:55:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:55:21,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:21,653 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] [2020-10-28 17:55:21,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:55:21,653 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash 60972998, now seen corresponding path program 1 times [2020-10-28 17:55:21,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:21,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612485888] [2020-10-28 17:55:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:26,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 17:55:26,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:55:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:55:26,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:26,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:55:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 17:55:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:27,113 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:55:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:27,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:55:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 17:55:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:55:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:55:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:55:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:27,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:55:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:27,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:55:27,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:27,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:27,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:55:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:27,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:55:27,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:55:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:55:27,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:55:27,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:27,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:55:27,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:55:27,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:55:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:55:27,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:27,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:27,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612485888] [2020-10-28 17:55:27,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:27,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:27,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948424301] [2020-10-28 17:55:27,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:27,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:27,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:27,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:27,614 INFO L87 Difference]: Start difference. First operand 271 states and 403 transitions. Second operand 9 states. [2020-10-28 17:55:27,998 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:28,327 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:55:29,060 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-28 17:55:29,449 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:55:30,708 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:34,651 INFO L93 Difference]: Finished difference Result 1071 states and 1610 transitions. [2020-10-28 17:55:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:55:34,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-28 17:55:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:34,658 INFO L225 Difference]: With dead ends: 1071 [2020-10-28 17:55:34,658 INFO L226 Difference]: Without dead ends: 826 [2020-10-28 17:55:34,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:55:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-10-28 17:55:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 732. [2020-10-28 17:55:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-28 17:55:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1091 transitions. [2020-10-28 17:55:34,751 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1091 transitions. Word has length 91 [2020-10-28 17:55:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:34,751 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1091 transitions. [2020-10-28 17:55:34,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1091 transitions. [2020-10-28 17:55:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:55:34,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:34,755 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] [2020-10-28 17:55:34,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:55:34,755 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:34,756 INFO L82 PathProgramCache]: Analyzing trace with hash -886113008, now seen corresponding path program 1 times [2020-10-28 17:55:34,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:34,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130430758] [2020-10-28 17:55:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:39,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:39,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 17:55:39,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:55:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:55:39,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:39,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:39,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:39,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:55:39,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 17:55:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,148 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:40,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:55:40,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:40,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:55:40,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 17:55:40,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:55:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:55:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:55:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:55:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:40,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:40,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:40,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:55:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:40,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:55:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:55:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:55:40,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:55:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:55:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:55:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:55:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:40,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:40,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:40,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:40,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:40,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:40,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:40,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:40,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130430758] [2020-10-28 17:55:40,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:40,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:40,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143026619] [2020-10-28 17:55:40,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:40,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:40,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:40,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:40,497 INFO L87 Difference]: Start difference. First operand 732 states and 1091 transitions. Second operand 9 states. [2020-10-28 17:55:40,861 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:41,200 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:55:41,664 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:42,010 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:42,887 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:45,894 INFO L93 Difference]: Finished difference Result 2257 states and 3374 transitions. [2020-10-28 17:55:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:55:45,894 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 17:55:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:45,905 INFO L225 Difference]: With dead ends: 2257 [2020-10-28 17:55:45,905 INFO L226 Difference]: Without dead ends: 1578 [2020-10-28 17:55:45,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:55:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2020-10-28 17:55:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1413. [2020-10-28 17:55:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2020-10-28 17:55:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2063 transitions. [2020-10-28 17:55:46,039 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2063 transitions. Word has length 92 [2020-10-28 17:55:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:46,039 INFO L481 AbstractCegarLoop]: Abstraction has 1413 states and 2063 transitions. [2020-10-28 17:55:46,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2063 transitions. [2020-10-28 17:55:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 17:55:46,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:46,044 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] [2020-10-28 17:55:46,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:55:46,045 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:46,045 INFO L82 PathProgramCache]: Analyzing trace with hash 914730003, now seen corresponding path program 1 times [2020-10-28 17:55:46,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:46,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91857483] [2020-10-28 17:55:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:55:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 17:55:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,438 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:51,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:55:51,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:51,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:55:51,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:55:51,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 17:55:51,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:55:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:51,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:55:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:55:51,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:51,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:55:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:51,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:51,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:55:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:51,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:55:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:51,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:51,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:55:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:55:51,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:55:51,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:55:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:55:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:51,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:51,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91857483] [2020-10-28 17:55:51,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:51,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:51,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38027602] [2020-10-28 17:55:51,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:51,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:51,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:51,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:51,850 INFO L87 Difference]: Start difference. First operand 1413 states and 2063 transitions. Second operand 9 states. [2020-10-28 17:55:52,212 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:52,594 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:53,004 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:53,363 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:54,646 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:58,483 INFO L93 Difference]: Finished difference Result 2696 states and 3920 transitions. [2020-10-28 17:55:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:55:58,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 17:55:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:58,496 INFO L225 Difference]: With dead ends: 2696 [2020-10-28 17:55:58,497 INFO L226 Difference]: Without dead ends: 2205 [2020-10-28 17:55:58,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:55:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2020-10-28 17:55:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 1202. [2020-10-28 17:55:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-10-28 17:55:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1731 transitions. [2020-10-28 17:55:58,615 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1731 transitions. Word has length 93 [2020-10-28 17:55:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:58,616 INFO L481 AbstractCegarLoop]: Abstraction has 1202 states and 1731 transitions. [2020-10-28 17:55:58,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1731 transitions. [2020-10-28 17:55:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 17:55:58,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:58,619 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] [2020-10-28 17:55:58,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:55:58,620 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1285781806, now seen corresponding path program 1 times [2020-10-28 17:55:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:58,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3652927] [2020-10-28 17:55:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:56:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:56:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-28 17:56:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:56:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 17:56:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:01,648 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:01,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:01,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:56:01,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:56:01,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:56:01,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:56:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:56:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:01,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:56:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:01,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:56:01,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:01,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:01,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:56:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:56:01,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:56:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:56:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:56:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:01,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:56:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:56:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:01,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:01,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:01,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:01,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:01,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3652927] [2020-10-28 17:56:01,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:01,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:01,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551950696] [2020-10-28 17:56:01,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:02,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:02,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:02,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:02,003 INFO L87 Difference]: Start difference. First operand 1202 states and 1731 transitions. Second operand 9 states. [2020-10-28 17:56:02,352 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:05,441 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:56:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:06,010 INFO L93 Difference]: Finished difference Result 3153 states and 4669 transitions. [2020-10-28 17:56:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:56:06,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 17:56:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:06,024 INFO L225 Difference]: With dead ends: 3153 [2020-10-28 17:56:06,024 INFO L226 Difference]: Without dead ends: 2275 [2020-10-28 17:56:06,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:56:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2020-10-28 17:56:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 1994. [2020-10-28 17:56:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1994 states. [2020-10-28 17:56:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2917 transitions. [2020-10-28 17:56:06,220 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2917 transitions. Word has length 93 [2020-10-28 17:56:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:06,221 INFO L481 AbstractCegarLoop]: Abstraction has 1994 states and 2917 transitions. [2020-10-28 17:56:06,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2917 transitions. [2020-10-28 17:56:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:56:06,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:06,225 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] [2020-10-28 17:56:06,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:56:06,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:06,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1608591065, now seen corresponding path program 1 times [2020-10-28 17:56:06,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:06,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665894585] [2020-10-28 17:56:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:10,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 17:56:10,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:56:10,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4264 [2020-10-28 17:56:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:10,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 17:56:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:10,939 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:10,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:10,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:10,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:10,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:10,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:56:10,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:10,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:10,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:11,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:11,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:56:11,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:11,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:56:11,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:11,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:11,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:56:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:11,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:56:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:11,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:11,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:56:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:11,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:11,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:11,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:11,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:56:11,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:11,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:11,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:11,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:56:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:11,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:11,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:11,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:11,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:11,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:11,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:11,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:56:11,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:56:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:56:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:11,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:11,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:11,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:11,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:56:11,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:11,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:56:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:11,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:11,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:11,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:11,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:11,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665894585] [2020-10-28 17:56:11,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:11,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:11,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320546407] [2020-10-28 17:56:11,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:11,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:11,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:11,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:11,457 INFO L87 Difference]: Start difference. First operand 1994 states and 2917 transitions. Second operand 9 states. [2020-10-28 17:56:11,811 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:12,209 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:56:12,671 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:56:13,359 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:56:14,539 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:18,495 INFO L93 Difference]: Finished difference Result 7079 states and 10397 transitions. [2020-10-28 17:56:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:56:18,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-28 17:56:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:18,524 INFO L225 Difference]: With dead ends: 7079 [2020-10-28 17:56:18,524 INFO L226 Difference]: Without dead ends: 5129 [2020-10-28 17:56:18,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:56:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2020-10-28 17:56:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 4646. [2020-10-28 17:56:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4646 states. [2020-10-28 17:56:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 6668 transitions. [2020-10-28 17:56:18,934 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 6668 transitions. Word has length 95 [2020-10-28 17:56:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:18,934 INFO L481 AbstractCegarLoop]: Abstraction has 4646 states and 6668 transitions. [2020-10-28 17:56:18,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 6668 transitions. [2020-10-28 17:56:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 17:56:18,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:18,943 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] [2020-10-28 17:56:18,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:56:18,943 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:18,944 INFO L82 PathProgramCache]: Analyzing trace with hash 873203757, now seen corresponding path program 1 times [2020-10-28 17:56:18,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:18,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087296512] [2020-10-28 17:56:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:19,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:23,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:56:23,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:56:23,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:56:23,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:23,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 17:56:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,297 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:24,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:56:24,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:56:24,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 17:56:24,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:56:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:56:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:24,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:24,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:56:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:24,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:56:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:56:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:56:24,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:56:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:56:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:24,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:56:24,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:56:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:24,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087296512] [2020-10-28 17:56:24,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:24,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:24,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968439200] [2020-10-28 17:56:24,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:24,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:24,698 INFO L87 Difference]: Start difference. First operand 4646 states and 6668 transitions. Second operand 9 states. [2020-10-28 17:56:25,088 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:25,488 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:56:25,981 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:56:26,909 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:56:27,791 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:32,173 INFO L93 Difference]: Finished difference Result 15857 states and 23129 transitions. [2020-10-28 17:56:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:56:32,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-28 17:56:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:32,234 INFO L225 Difference]: With dead ends: 15857 [2020-10-28 17:56:32,235 INFO L226 Difference]: Without dead ends: 11777 [2020-10-28 17:56:32,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:56:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2020-10-28 17:56:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 10693. [2020-10-28 17:56:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10693 states. [2020-10-28 17:56:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10693 states to 10693 states and 15243 transitions. [2020-10-28 17:56:33,120 INFO L78 Accepts]: Start accepts. Automaton has 10693 states and 15243 transitions. Word has length 96 [2020-10-28 17:56:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:33,120 INFO L481 AbstractCegarLoop]: Abstraction has 10693 states and 15243 transitions. [2020-10-28 17:56:33,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 10693 states and 15243 transitions. [2020-10-28 17:56:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 17:56:33,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:33,138 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] [2020-10-28 17:56:33,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:56:33,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:33,139 INFO L82 PathProgramCache]: Analyzing trace with hash -934128382, now seen corresponding path program 1 times [2020-10-28 17:56:33,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:33,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644466098] [2020-10-28 17:56:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 17:56:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,402 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:36,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:36,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:56:36,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:56:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:56:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:36,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:56:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:36,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:56:36,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:56:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:56:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:56:36,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:56:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:56:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:36,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 17:56:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:56:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:36,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:56:36,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:36,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:36,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644466098] [2020-10-28 17:56:36,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:36,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:36,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161226347] [2020-10-28 17:56:36,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:36,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:36,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:36,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:36,779 INFO L87 Difference]: Start difference. First operand 10693 states and 15243 transitions. Second operand 9 states. [2020-10-28 17:56:37,156 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:40,280 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:56:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:41,807 INFO L93 Difference]: Finished difference Result 29054 states and 42162 transitions. [2020-10-28 17:56:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:56:41,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-28 17:56:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:41,904 INFO L225 Difference]: With dead ends: 29054 [2020-10-28 17:56:41,904 INFO L226 Difference]: Without dead ends: 20176 [2020-10-28 17:56:41,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:56:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20176 states. [2020-10-28 17:56:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20176 to 17929. [2020-10-28 17:56:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17929 states. [2020-10-28 17:56:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25021 transitions. [2020-10-28 17:56:43,972 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25021 transitions. Word has length 97 [2020-10-28 17:56:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:43,972 INFO L481 AbstractCegarLoop]: Abstraction has 17929 states and 25021 transitions. [2020-10-28 17:56:43,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25021 transitions. [2020-10-28 17:56:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:56:43,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:43,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:43,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:56:43,995 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1753359667, now seen corresponding path program 1 times [2020-10-28 17:56:43,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:43,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096862886] [2020-10-28 17:56:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:44,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:56:49,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,427 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:49,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:56:49,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:56:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:56:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:49,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:56:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:49,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:56:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:56:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:56:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:56:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:56:49,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:56:49,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:56:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:56:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:56:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:49,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:49,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:49,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096862886] [2020-10-28 17:56:49,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:49,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:49,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333661774] [2020-10-28 17:56:49,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:49,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:49,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:49,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:49,844 INFO L87 Difference]: Start difference. First operand 17929 states and 25021 transitions. Second operand 9 states. [2020-10-28 17:56:50,270 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:50,726 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:56:51,198 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:56:52,274 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:56:53,255 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:59,634 INFO L93 Difference]: Finished difference Result 58998 states and 83377 transitions. [2020-10-28 17:56:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:56:59,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-28 17:56:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:00,034 INFO L225 Difference]: With dead ends: 58998 [2020-10-28 17:57:00,035 INFO L226 Difference]: Without dead ends: 42403 [2020-10-28 17:57:00,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:57:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42403 states. [2020-10-28 17:57:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42403 to 39335. [2020-10-28 17:57:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39335 states. [2020-10-28 17:57:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39335 states to 39335 states and 54086 transitions. [2020-10-28 17:57:03,449 INFO L78 Accepts]: Start accepts. Automaton has 39335 states and 54086 transitions. Word has length 99 [2020-10-28 17:57:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:03,450 INFO L481 AbstractCegarLoop]: Abstraction has 39335 states and 54086 transitions. [2020-10-28 17:57:03,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 39335 states and 54086 transitions. [2020-10-28 17:57:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 17:57:03,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:03,501 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] [2020-10-28 17:57:03,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:57:03,502 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1823703295, now seen corresponding path program 1 times [2020-10-28 17:57:03,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:03,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127297015] [2020-10-28 17:57:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:08,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:57:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:08,903 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:08,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:08,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:08,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:08,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:57:08,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:08,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:08,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:08,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:08,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:08,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:08,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:08,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:08,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:57:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:57:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:09,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:09,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:09,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:09,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:09,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:57:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:09,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:09,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:57:09,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:09,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:09,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:57:09,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:57:09,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:57:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:09,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:09,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:09,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:09,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:09,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:09,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:57:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:57:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:57:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:09,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:09,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:57:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 17:57:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:09,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127297015] [2020-10-28 17:57:09,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:09,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:09,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943370134] [2020-10-28 17:57:09,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:09,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:09,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:09,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:09,270 INFO L87 Difference]: Start difference. First operand 39335 states and 54086 transitions. Second operand 9 states. [2020-10-28 17:57:09,666 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:10,075 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:57:10,488 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:57:11,634 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:57:12,396 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:20,512 INFO L93 Difference]: Finished difference Result 118898 states and 165646 transitions. [2020-10-28 17:57:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:57:20,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-28 17:57:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:20,889 INFO L225 Difference]: With dead ends: 118898 [2020-10-28 17:57:20,889 INFO L226 Difference]: Without dead ends: 84457 [2020-10-28 17:57:20,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:57:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84457 states. [2020-10-28 17:57:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84457 to 79285. [2020-10-28 17:57:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79285 states. [2020-10-28 17:57:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79285 states to 79285 states and 107426 transitions. [2020-10-28 17:57:27,244 INFO L78 Accepts]: Start accepts. Automaton has 79285 states and 107426 transitions. Word has length 100 [2020-10-28 17:57:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:27,245 INFO L481 AbstractCegarLoop]: Abstraction has 79285 states and 107426 transitions. [2020-10-28 17:57:27,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 79285 states and 107426 transitions. [2020-10-28 17:57:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:57:27,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:27,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:27,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:57:27,576 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:27,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1685956782, now seen corresponding path program 1 times [2020-10-28 17:57:27,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:27,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560748856] [2020-10-28 17:57:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3417 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:57:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:57:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,386 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:31,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 17:57:31,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:31,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:57:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:31,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 17:57:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:57:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:31,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:31,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:57:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:31,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:31,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:31,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:57:31,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:57:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:57:31,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:31,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:57:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:57:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:31,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:31,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560748856] [2020-10-28 17:57:31,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:31,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:31,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318535325] [2020-10-28 17:57:31,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:31,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:31,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:31,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:31,691 INFO L87 Difference]: Start difference. First operand 79285 states and 107426 transitions. Second operand 9 states. [2020-10-28 17:57:32,496 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:38,141 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:41,457 INFO L93 Difference]: Finished difference Result 151003 states and 206002 transitions. [2020-10-28 17:57:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:57:41,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-28 17:57:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:42,084 INFO L225 Difference]: With dead ends: 151003 [2020-10-28 17:57:42,085 INFO L226 Difference]: Without dead ends: 105331 [2020-10-28 17:57:42,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105331 states. [2020-10-28 17:57:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105331 to 97473. [2020-10-28 17:57:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97473 states. [2020-10-28 17:57:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97473 states to 97473 states and 131980 transitions. [2020-10-28 17:57:50,066 INFO L78 Accepts]: Start accepts. Automaton has 97473 states and 131980 transitions. Word has length 101 [2020-10-28 17:57:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:50,067 INFO L481 AbstractCegarLoop]: Abstraction has 97473 states and 131980 transitions. [2020-10-28 17:57:50,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 97473 states and 131980 transitions. [2020-10-28 17:57:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:57:50,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:50,127 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] [2020-10-28 17:57:50,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:57:50,128 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1143486851, now seen corresponding path program 1 times [2020-10-28 17:57:50,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:50,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772352021] [2020-10-28 17:57:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-10-28 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:51,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:57:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:51,786 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:51,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:57:51,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:57:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:51,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:57:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:57:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:51,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:51,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:57:51,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:57:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:51,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:57:51,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:51,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:51,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:57:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:52,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:57:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:52,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:52,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:57:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:52,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772352021] [2020-10-28 17:57:52,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:52,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:52,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757138870] [2020-10-28 17:57:52,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:52,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:52,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:52,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:52,062 INFO L87 Difference]: Start difference. First operand 97473 states and 131980 transitions. Second operand 9 states. [2020-10-28 17:57:52,820 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:58,302 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:04,306 INFO L93 Difference]: Finished difference Result 189133 states and 257974 transitions. [2020-10-28 17:58:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:58:04,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-28 17:58:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:04,915 INFO L225 Difference]: With dead ends: 189133 [2020-10-28 17:58:04,915 INFO L226 Difference]: Without dead ends: 130890 [2020-10-28 17:58:05,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:58:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130890 states. [2020-10-28 17:58:14,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130890 to 122735. [2020-10-28 17:58:14,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122735 states. [2020-10-28 17:58:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122735 states to 122735 states and 166580 transitions. [2020-10-28 17:58:14,779 INFO L78 Accepts]: Start accepts. Automaton has 122735 states and 166580 transitions. Word has length 101 [2020-10-28 17:58:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:14,780 INFO L481 AbstractCegarLoop]: Abstraction has 122735 states and 166580 transitions. [2020-10-28 17:58:14,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 122735 states and 166580 transitions. [2020-10-28 17:58:14,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:58:14,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:14,840 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] [2020-10-28 17:58:14,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:58:14,841 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:14,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1318693834, now seen corresponding path program 1 times [2020-10-28 17:58:14,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:14,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965696073] [2020-10-28 17:58:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:15,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:58:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:58:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:58:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:15,920 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:15,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:58:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:16,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:16,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:16,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:16,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:16,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:16,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:58:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:16,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:58:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:16,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:16,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:16,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:16,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:58:16,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:16,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:16,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:58:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:58:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:16,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:58:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:58:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:58:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:16,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965696073] [2020-10-28 17:58:16,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:16,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:58:16,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052247315] [2020-10-28 17:58:16,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:58:16,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:16,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:58:16,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:58:16,315 INFO L87 Difference]: Start difference. First operand 122735 states and 166580 transitions. Second operand 13 states. [2020-10-28 17:58:16,725 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:17,547 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:58:17,878 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:19,111 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:19,957 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-28 17:58:20,922 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-28 17:58:21,752 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-28 17:58:22,339 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-28 17:58:23,221 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-28 17:58:23,956 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189