/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_floodmax.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:34:54,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:34:54,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:34:54,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:34:54,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:34:54,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:34:54,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:34:54,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:34:54,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:34:54,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:34:54,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:34:54,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:34:54,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:34:54,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:34:54,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:34:54,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:34:54,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:34:54,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:34:54,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:34:54,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:34:54,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:34:54,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:34:54,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:34:54,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:34:54,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:34:54,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:34:54,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:34:54,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:34:54,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:34:54,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:34:54,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:34:54,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:34:54,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:34:54,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:34:54,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:34:54,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:34:54,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:34:54,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:34:54,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:34:54,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:34:54,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:34:54,550 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 17:34:54,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:34:54,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:34:54,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:34:54,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:34:54,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:34:54,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:34:54,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:34:54,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:34:54,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:34:54,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:34:54,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:34:54,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:34:54,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:34:54,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:34:54,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:34:54,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:34:54,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:34:54,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:34:54,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:34:54,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:34:54,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:34:54,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:34:54,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:34:54,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:34:54,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:34:54,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:34:54,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:34:54,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:34:54,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:34:54,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:34:54,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:34:55,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:34:55,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:34:55,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:34:55,040 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:34:55,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-28 17:34:55,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e3096a77/213c627ae4ed49cf8fdc6ccece793847/FLAG6e70ab149 [2020-10-28 17:34:55,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:34:55,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-28 17:34:55,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e3096a77/213c627ae4ed49cf8fdc6ccece793847/FLAG6e70ab149 [2020-10-28 17:34:56,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e3096a77/213c627ae4ed49cf8fdc6ccece793847 [2020-10-28 17:34:56,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:34:56,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:34:56,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:34:56,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:34:56,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:34:56,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e15dfad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56, skipping insertion in model container [2020-10-28 17:34:56,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:34:56,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:34:56,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:34:56,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:34:56,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:34:56,560 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:34:56,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56 WrapperNode [2020-10-28 17:34:56,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:34:56,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:34:56,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:34:56,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:34:56,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (1/1) ... [2020-10-28 17:34:56,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:34:56,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:34:56,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:34:56,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:34:56,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (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 17:34:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:34:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:34:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:34:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:34:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:34:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:34:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:34:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:34:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:34:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:34:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:34:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:34:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:34:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:34:56,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:34:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:34:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:34:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:34:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:34:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:34:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:34:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:34:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:34:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:34:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:34:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:34:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:34:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:34:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:34:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:34:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:34:57,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:34:57,759 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:34:57,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:34:57 BoogieIcfgContainer [2020-10-28 17:34:57,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:34:57,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:34:57,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:34:57,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:34:57,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:34:56" (1/3) ... [2020-10-28 17:34:57,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe33e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:34:57, skipping insertion in model container [2020-10-28 17:34:57,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:34:56" (2/3) ... [2020-10-28 17:34:57,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe33e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:34:57, skipping insertion in model container [2020-10-28 17:34:57,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:34:57" (3/3) ... [2020-10-28 17:34:57,770 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c [2020-10-28 17:34:57,783 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:34:57,789 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:34:57,801 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:34:57,827 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:34:57,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:34:57,827 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:34:57,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:34:57,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:34:57,828 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:34:57,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:34:57,828 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:34:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-28 17:34:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 17:34:57,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:57,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:34:57,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:57,870 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-28 17:34:57,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:57,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79381891] [2020-10-28 17:34:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:58,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:58,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:34:58,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-28 17:34:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:58,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:34:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:34:59,063 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:59,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:34:59,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:34:59,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:34:59,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:34:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:59,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:59,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:34:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:34:59,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:34:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:59,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:34:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:59,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:59,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:59,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:34:59,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:59,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:59,363 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 17:34:59,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79381891] [2020-10-28 17:34:59,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:59,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:34:59,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630474028] [2020-10-28 17:34:59,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:34:59,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:59,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:34:59,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:34:59,392 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-28 17:35:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:00,525 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-28 17:35:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:35:00,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-28 17:35:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:00,540 INFO L225 Difference]: With dead ends: 263 [2020-10-28 17:35:00,541 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 17:35:00,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 17:35:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-28 17:35:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-28 17:35:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-28 17:35:00,614 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-28 17:35:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:00,615 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-28 17:35:00,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:35:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-28 17:35:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 17:35:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:00,619 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] [2020-10-28 17:35:00,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:35:00,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-28 17:35:00,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:00,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943945498] [2020-10-28 17:35:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:01,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:35:01,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-28 17:35:01,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:01,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:35:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:35:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:01,778 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:01,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:01,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:01,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:35:01,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:01,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:01,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:01,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:01,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:01,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:01,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:01,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:35:01,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 17:35:01,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:01,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:35:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:35:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:02,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:02,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:02,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:02,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:02,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:35:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:02,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:02,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:02,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:02,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:35:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:35:02,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:02,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:35:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:35:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:35:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:02,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:02,266 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 17:35:02,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943945498] [2020-10-28 17:35:02,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:02,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:35:02,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965138000] [2020-10-28 17:35:02,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:35:02,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:02,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:35:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:35:02,273 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-28 17:35:02,919 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:03,256 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:35:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:04,831 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-28 17:35:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:35:04,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-28 17:35:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:04,839 INFO L225 Difference]: With dead ends: 264 [2020-10-28 17:35:04,839 INFO L226 Difference]: Without dead ends: 172 [2020-10-28 17:35:04,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:35:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-28 17:35:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-28 17:35:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-28 17:35:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-28 17:35:04,898 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-28 17:35:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:04,899 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-28 17:35:04,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:35:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-28 17:35:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:35:04,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:04,910 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] [2020-10-28 17:35:04,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:35:04,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:04,911 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-28 17:35:04,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:04,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179647575] [2020-10-28 17:35:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:09,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:09,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:35:09,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:35:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:35:09,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:09,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:35:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:35:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:10,330 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:10,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:35:10,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:10,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 17:35:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:35:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:35:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:10,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:35:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:35:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:35:10,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:10,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:35:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:35:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:10,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:35:10,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:35:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:35:10,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:35:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:10,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:35:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:10,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:10,651 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 17:35:10,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179647575] [2020-10-28 17:35:10,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:10,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:10,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123182840] [2020-10-28 17:35:10,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:10,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:10,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:10,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:10,655 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 9 states. [2020-10-28 17:35:10,942 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:35:13,269 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:35:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:13,506 INFO L93 Difference]: Finished difference Result 345 states and 515 transitions. [2020-10-28 17:35:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:35:13,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-28 17:35:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:13,514 INFO L225 Difference]: With dead ends: 345 [2020-10-28 17:35:13,518 INFO L226 Difference]: Without dead ends: 259 [2020-10-28 17:35:13,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:35:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-28 17:35:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 229. [2020-10-28 17:35:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-28 17:35:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2020-10-28 17:35:13,560 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 85 [2020-10-28 17:35:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:13,560 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2020-10-28 17:35:13,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2020-10-28 17:35:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 17:35:13,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:13,563 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] [2020-10-28 17:35:13,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:35:13,563 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1944715720, now seen corresponding path program 1 times [2020-10-28 17:35:13,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:13,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831472548] [2020-10-28 17:35:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:18,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:18,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:35:18,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:35:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:35:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:18,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 17:35:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:18,964 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:18,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:18,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:35:18,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:18,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:18,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:35:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:35:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:19,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:19,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:35:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:19,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:19,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:35:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:35:19,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:35:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:35:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:35:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,285 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 17:35:19,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831472548] [2020-10-28 17:35:19,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:19,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:19,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507377260] [2020-10-28 17:35:19,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:19,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:19,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:19,288 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand 9 states. [2020-10-28 17:35:19,578 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:19,914 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:35:20,306 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:20,622 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:35:21,661 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:23,959 INFO L93 Difference]: Finished difference Result 701 states and 1046 transitions. [2020-10-28 17:35:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:35:23,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-28 17:35:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:23,968 INFO L225 Difference]: With dead ends: 701 [2020-10-28 17:35:23,968 INFO L226 Difference]: Without dead ends: 498 [2020-10-28 17:35:23,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:35:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-28 17:35:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 452. [2020-10-28 17:35:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-10-28 17:35:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 661 transitions. [2020-10-28 17:35:24,026 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 661 transitions. Word has length 87 [2020-10-28 17:35:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:24,026 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 661 transitions. [2020-10-28 17:35:24,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 661 transitions. [2020-10-28 17:35:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 17:35:24,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:24,028 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] [2020-10-28 17:35:24,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:35:24,029 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:24,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2000090222, now seen corresponding path program 1 times [2020-10-28 17:35:24,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:24,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524750435] [2020-10-28 17:35:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 17:35:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:35:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:35:29,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 17:35:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,479 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:35:29,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 17:35:29,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:35:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:35:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:29,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:35:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:29,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:35:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:29,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:35:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:35:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:35:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:29,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:29,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:29,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:35:29,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:29,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:29,931 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 17:35:29,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524750435] [2020-10-28 17:35:29,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:29,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:29,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727652989] [2020-10-28 17:35:29,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:29,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:29,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:29,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:29,934 INFO L87 Difference]: Start difference. First operand 452 states and 661 transitions. Second operand 9 states. [2020-10-28 17:35:30,286 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:30,648 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:35:31,046 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:35:31,665 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-28 17:35:32,779 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:35,816 INFO L93 Difference]: Finished difference Result 1642 states and 2397 transitions. [2020-10-28 17:35:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:35,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-28 17:35:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:35,825 INFO L225 Difference]: With dead ends: 1642 [2020-10-28 17:35:35,825 INFO L226 Difference]: Without dead ends: 1222 [2020-10-28 17:35:35,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:35:35,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-10-28 17:35:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1123. [2020-10-28 17:35:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-28 17:35:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1616 transitions. [2020-10-28 17:35:35,928 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1616 transitions. Word has length 87 [2020-10-28 17:35:35,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:35,929 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1616 transitions. [2020-10-28 17:35:35,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1616 transitions. [2020-10-28 17:35:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 17:35:35,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:35,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:35:35,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:35:35,933 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:35,934 INFO L82 PathProgramCache]: Analyzing trace with hash 121059800, now seen corresponding path program 1 times [2020-10-28 17:35:35,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:35,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907734177] [2020-10-28 17:35:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 17:35:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,290 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:41,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:41,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:41,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:35:41,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:41,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:41,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:41,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:35:41,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:41,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:35:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:35:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:41,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:41,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:41,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:41,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:41,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:41,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:41,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:35:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:41,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:35:41,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:41,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:35:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:41,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:41,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:35:41,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:35:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 17:35:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:41,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:41,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:41,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:41,676 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 17:35:41,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907734177] [2020-10-28 17:35:41,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:41,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:35:41,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298191468] [2020-10-28 17:35:41,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:35:41,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:35:41,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:35:41,680 INFO L87 Difference]: Start difference. First operand 1123 states and 1616 transitions. Second operand 9 states. [2020-10-28 17:35:41,986 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:42,319 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 17:35:42,705 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:35:43,611 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-28 17:35:44,597 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:47,726 INFO L93 Difference]: Finished difference Result 4031 states and 5770 transitions. [2020-10-28 17:35:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:35:47,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-28 17:35:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:47,745 INFO L225 Difference]: With dead ends: 4031 [2020-10-28 17:35:47,745 INFO L226 Difference]: Without dead ends: 3002 [2020-10-28 17:35:47,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:35:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-10-28 17:35:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2795. [2020-10-28 17:35:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-28 17:35:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3951 transitions. [2020-10-28 17:35:47,974 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3951 transitions. Word has length 88 [2020-10-28 17:35:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:47,974 INFO L481 AbstractCegarLoop]: Abstraction has 2795 states and 3951 transitions. [2020-10-28 17:35:47,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:35:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3951 transitions. [2020-10-28 17:35:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 17:35:47,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:47,982 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] [2020-10-28 17:35:47,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:35:47,983 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:47,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1482976091, now seen corresponding path program 1 times [2020-10-28 17:35:47,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:47,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769554414] [2020-10-28 17:35:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:35:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 17:35:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:53,303 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:53,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:53,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:35:53,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:35:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:35:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 17:35:53,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:35:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:35:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:35:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:35:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:35:53,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:35:53,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:35:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:53,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:53,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:53,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:35:53,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:35:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:53,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:35:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:35:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:35:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 17:35:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:53,854 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 17:35:53,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769554414] [2020-10-28 17:35:53,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:53,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:35:53,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079832031] [2020-10-28 17:35:53,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:35:53,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:53,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:35:53,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:35:53,865 INFO L87 Difference]: Start difference. First operand 2795 states and 3951 transitions. Second operand 10 states. [2020-10-28 17:35:54,221 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:54,728 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:55,259 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:35:55,634 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:35:56,031 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:35:56,364 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:35:56,728 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:35:57,078 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:36:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:01,713 INFO L93 Difference]: Finished difference Result 9203 states and 13439 transitions. [2020-10-28 17:36:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:36:01,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-28 17:36:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:01,753 INFO L225 Difference]: With dead ends: 9203 [2020-10-28 17:36:01,754 INFO L226 Difference]: Without dead ends: 6845 [2020-10-28 17:36:01,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:36:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2020-10-28 17:36:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6431. [2020-10-28 17:36:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6431 states. [2020-10-28 17:36:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 9294 transitions. [2020-10-28 17:36:02,358 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 9294 transitions. Word has length 88 [2020-10-28 17:36:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:02,359 INFO L481 AbstractCegarLoop]: Abstraction has 6431 states and 9294 transitions. [2020-10-28 17:36:02,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:36:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 9294 transitions. [2020-10-28 17:36:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:36:02,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:02,376 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 17:36:02,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:36:02,376 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:02,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:02,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1609549539, now seen corresponding path program 1 times [2020-10-28 17:36:02,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:02,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866664251] [2020-10-28 17:36:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:07,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:07,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:36:07,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:36:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 17:36:07,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:07,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 17:36:07,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:07,729 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:07,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:07,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:36:07,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:07,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:07,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:07,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:07,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:07,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:36:07,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:07,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:36:07,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:07,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:07,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:36:07,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:36:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:07,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:07,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:07,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:07,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:07,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:07,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:07,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:36:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:07,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:36:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:08,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:08,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:08,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:36:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:08,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:36:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:08,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:08,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:08,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:36:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:08,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:08,083 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 17:36:08,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866664251] [2020-10-28 17:36:08,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:08,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:08,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511178030] [2020-10-28 17:36:08,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:08,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:08,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:08,087 INFO L87 Difference]: Start difference. First operand 6431 states and 9294 transitions. Second operand 9 states. [2020-10-28 17:36:08,422 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:08,785 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:36:09,296 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:36:09,933 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-28 17:36:10,966 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:14,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:14,192 INFO L93 Difference]: Finished difference Result 8868 states and 12710 transitions. [2020-10-28 17:36:14,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:36:14,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-28 17:36:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:14,238 INFO L225 Difference]: With dead ends: 8868 [2020-10-28 17:36:14,238 INFO L226 Difference]: Without dead ends: 6754 [2020-10-28 17:36:14,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:36:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2020-10-28 17:36:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 5522. [2020-10-28 17:36:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5522 states. [2020-10-28 17:36:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 7845 transitions. [2020-10-28 17:36:14,698 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 7845 transitions. Word has length 89 [2020-10-28 17:36:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:14,699 INFO L481 AbstractCegarLoop]: Abstraction has 5522 states and 7845 transitions. [2020-10-28 17:36:14,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 7845 transitions. [2020-10-28 17:36:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:36:14,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:14,714 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 17:36:14,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:36:14,714 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash 907396150, now seen corresponding path program 1 times [2020-10-28 17:36:14,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:14,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54139303] [2020-10-28 17:36:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:14,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:36:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:36:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:36:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:19,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:36:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:36:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 17:36:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,083 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:36:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:20,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:20,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:20,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:36:20,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:36:20,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:20,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:36:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:36:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:20,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:20,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:20,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:36:20,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:20,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:36:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:20,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:36:20,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:36:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:36:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:36:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:36:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:20,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:36:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:36:20,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:20,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:36:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:36:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:20,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:20,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:20,401 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 17:36:20,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54139303] [2020-10-28 17:36:20,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:20,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:20,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764493264] [2020-10-28 17:36:20,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:20,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:20,403 INFO L87 Difference]: Start difference. First operand 5522 states and 7845 transitions. Second operand 9 states. [2020-10-28 17:36:20,740 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:36:23,348 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:36:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:23,672 INFO L93 Difference]: Finished difference Result 12667 states and 18464 transitions. [2020-10-28 17:36:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:36:23,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-28 17:36:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:23,727 INFO L225 Difference]: With dead ends: 12667 [2020-10-28 17:36:23,727 INFO L226 Difference]: Without dead ends: 9062 [2020-10-28 17:36:23,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:36:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2020-10-28 17:36:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 8457. [2020-10-28 17:36:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8457 states. [2020-10-28 17:36:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8457 states to 8457 states and 12146 transitions. [2020-10-28 17:36:24,432 INFO L78 Accepts]: Start accepts. Automaton has 8457 states and 12146 transitions. Word has length 89 [2020-10-28 17:36:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:24,432 INFO L481 AbstractCegarLoop]: Abstraction has 8457 states and 12146 transitions. [2020-10-28 17:36:24,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 8457 states and 12146 transitions. [2020-10-28 17:36:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:36:24,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:24,451 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 17:36:24,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:36:24,452 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:24,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1700234142, now seen corresponding path program 1 times [2020-10-28 17:36:24,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:24,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477109948] [2020-10-28 17:36:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:29,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:29,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 17:36:29,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:36:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:36:29,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:29,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 17:36:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 55 [2020-10-28 17:36:29,887 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:29,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 17:36:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:36:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 17:36:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:30,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:36:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:36:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:36:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:30,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:30,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:36:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:36:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:36:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:30,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:36:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:30,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:30,280 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 17:36:30,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477109948] [2020-10-28 17:36:30,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:30,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:36:30,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101937377] [2020-10-28 17:36:30,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:36:30,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:30,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:36:30,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:36:30,283 INFO L87 Difference]: Start difference. First operand 8457 states and 12146 transitions. Second operand 10 states. [2020-10-28 17:36:30,673 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:31,188 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:36:31,550 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:36:31,912 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:32,332 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:36:32,694 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:36:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:38,150 INFO L93 Difference]: Finished difference Result 20632 states and 29874 transitions. [2020-10-28 17:36:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:36:38,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-28 17:36:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:38,222 INFO L225 Difference]: With dead ends: 20632 [2020-10-28 17:36:38,223 INFO L226 Difference]: Without dead ends: 12018 [2020-10-28 17:36:38,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:36:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12018 states. [2020-10-28 17:36:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12018 to 11415. [2020-10-28 17:36:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11415 states. [2020-10-28 17:36:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11415 states to 11415 states and 16380 transitions. [2020-10-28 17:36:39,320 INFO L78 Accepts]: Start accepts. Automaton has 11415 states and 16380 transitions. Word has length 91 [2020-10-28 17:36:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:39,320 INFO L481 AbstractCegarLoop]: Abstraction has 11415 states and 16380 transitions. [2020-10-28 17:36:39,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:36:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 11415 states and 16380 transitions. [2020-10-28 17:36:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:36:39,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:39,340 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 17:36:39,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:36:39,340 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:39,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1057061388, now seen corresponding path program 1 times [2020-10-28 17:36:39,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:39,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633977723] [2020-10-28 17:36:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:39,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:44,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 17:36:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:44,738 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:44,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:44,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:44,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:44,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:36:44,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:44,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:44,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:36:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:36:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:44,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:36:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:36:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:36:44,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:44,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:36:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:36:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:36:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:45,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:45,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:36:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:45,059 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 17:36:45,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633977723] [2020-10-28 17:36:45,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:45,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:45,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134239665] [2020-10-28 17:36:45,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:45,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:45,061 INFO L87 Difference]: Start difference. First operand 11415 states and 16380 transitions. Second operand 9 states. [2020-10-28 17:36:45,410 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:36:45,784 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:36:46,150 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:36:47,130 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:36:51,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:36:51,482 INFO L93 Difference]: Finished difference Result 31349 states and 45797 transitions. [2020-10-28 17:36:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:36:51,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 17:36:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:36:51,583 INFO L225 Difference]: With dead ends: 31349 [2020-10-28 17:36:51,584 INFO L226 Difference]: Without dead ends: 21744 [2020-10-28 17:36:51,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:36:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21744 states. [2020-10-28 17:36:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21744 to 21394. [2020-10-28 17:36:53,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21394 states. [2020-10-28 17:36:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21394 states to 21394 states and 30460 transitions. [2020-10-28 17:36:53,605 INFO L78 Accepts]: Start accepts. Automaton has 21394 states and 30460 transitions. Word has length 92 [2020-10-28 17:36:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:36:53,605 INFO L481 AbstractCegarLoop]: Abstraction has 21394 states and 30460 transitions. [2020-10-28 17:36:53,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:36:53,605 INFO L276 IsEmpty]: Start isEmpty. Operand 21394 states and 30460 transitions. [2020-10-28 17:36:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 17:36:53,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:36:53,636 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 17:36:53,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:36:53,637 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:36:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:36:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash -558788546, now seen corresponding path program 1 times [2020-10-28 17:36:53,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:36:53,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315839003] [2020-10-28 17:36:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:36:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:53,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:36:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 17:36:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:58,984 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:36:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:36:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:58,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:58,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:59,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:36:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:36:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:36:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 17:36:59,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:59,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:36:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:36:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:59,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:36:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:59,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:59,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:59,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:59,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:59,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:36:59,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:36:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:36:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:59,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:36:59,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:36:59,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:59,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:36:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:36:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:36:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:36:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:59,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:36:59,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:36:59,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:59,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:36:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:36:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:36:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:36:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:36:59,327 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 17:36:59,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315839003] [2020-10-28 17:36:59,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:36:59,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:36:59,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074601386] [2020-10-28 17:36:59,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:36:59,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:36:59,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:36:59,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:36:59,329 INFO L87 Difference]: Start difference. First operand 21394 states and 30460 transitions. Second operand 9 states. [2020-10-28 17:36:59,698 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:00,069 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 17:37:00,502 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:37:01,365 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-28 17:37:02,256 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:37:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:06,675 INFO L93 Difference]: Finished difference Result 29389 states and 41733 transitions. [2020-10-28 17:37:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:37:06,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-28 17:37:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:06,758 INFO L225 Difference]: With dead ends: 29389 [2020-10-28 17:37:06,759 INFO L226 Difference]: Without dead ends: 20595 [2020-10-28 17:37:06,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:37:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20595 states. [2020-10-28 17:37:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20595 to 20184. [2020-10-28 17:37:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20184 states. [2020-10-28 17:37:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20184 states to 20184 states and 28634 transitions. [2020-10-28 17:37:08,355 INFO L78 Accepts]: Start accepts. Automaton has 20184 states and 28634 transitions. Word has length 92 [2020-10-28 17:37:08,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:08,355 INFO L481 AbstractCegarLoop]: Abstraction has 20184 states and 28634 transitions. [2020-10-28 17:37:08,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:37:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20184 states and 28634 transitions. [2020-10-28 17:37:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 17:37:08,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:08,390 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 17:37:08,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:37:08,390 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:08,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1048225195, now seen corresponding path program 1 times [2020-10-28 17:37:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:08,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595574971] [2020-10-28 17:37:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:08,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 17:37:13,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:37:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:37:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 17:37:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 17:37:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,732 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:13,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:13,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:37:13,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:37:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:37:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:13,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:37:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:13,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:37:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:13,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:13,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:13,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:13,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:13,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:13,965 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 17:37:13,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595574971] [2020-10-28 17:37:13,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:13,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:37:13,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607530334] [2020-10-28 17:37:13,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:37:13,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:13,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:37:13,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:37:13,967 INFO L87 Difference]: Start difference. First operand 20184 states and 28634 transitions. Second operand 9 states. [2020-10-28 17:37:14,269 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:37:16,516 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:37:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:18,245 INFO L93 Difference]: Finished difference Result 44443 states and 63475 transitions. [2020-10-28 17:37:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:37:18,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 17:37:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:18,363 INFO L225 Difference]: With dead ends: 44443 [2020-10-28 17:37:18,364 INFO L226 Difference]: Without dead ends: 27154 [2020-10-28 17:37:18,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:37:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27154 states. [2020-10-28 17:37:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27154 to 26297. [2020-10-28 17:37:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26297 states. [2020-10-28 17:37:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26297 states to 26297 states and 35582 transitions. [2020-10-28 17:37:20,473 INFO L78 Accepts]: Start accepts. Automaton has 26297 states and 35582 transitions. Word has length 93 [2020-10-28 17:37:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:20,473 INFO L481 AbstractCegarLoop]: Abstraction has 26297 states and 35582 transitions. [2020-10-28 17:37:20,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:37:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 26297 states and 35582 transitions. [2020-10-28 17:37:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:37:20,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:20,514 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 17:37:20,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:37:20,515 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1969134143, now seen corresponding path program 1 times [2020-10-28 17:37:20,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:20,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854155583] [2020-10-28 17:37:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:25,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:25,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 17:37:25,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:37:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:37:25,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:25,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 17:37:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 17:37:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:25,867 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:25,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:25,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:25,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:25,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:37:25,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:25,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:26,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:26,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:37:26,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:37:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 17:37:26,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:26,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:37:26,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:37:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:37:26,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:37:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:26,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:37:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:37:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:26,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:37:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:37:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:37:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:26,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:26,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:26,224 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 17:37:26,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854155583] [2020-10-28 17:37:26,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:26,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:37:26,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645702442] [2020-10-28 17:37:26,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:37:26,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:37:26,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:37:26,226 INFO L87 Difference]: Start difference. First operand 26297 states and 35582 transitions. Second operand 8 states. [2020-10-28 17:37:26,649 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:30,942 INFO L93 Difference]: Finished difference Result 44576 states and 60852 transitions. [2020-10-28 17:37:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:37:30,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-28 17:37:30,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:31,082 INFO L225 Difference]: With dead ends: 44576 [2020-10-28 17:37:31,082 INFO L226 Difference]: Without dead ends: 31986 [2020-10-28 17:37:31,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:37:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31986 states. [2020-10-28 17:37:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31986 to 31574. [2020-10-28 17:37:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31574 states. [2020-10-28 17:37:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31574 states to 31574 states and 42647 transitions. [2020-10-28 17:37:33,969 INFO L78 Accepts]: Start accepts. Automaton has 31574 states and 42647 transitions. Word has length 95 [2020-10-28 17:37:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:33,970 INFO L481 AbstractCegarLoop]: Abstraction has 31574 states and 42647 transitions. [2020-10-28 17:37:33,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:37:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 31574 states and 42647 transitions. [2020-10-28 17:37:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:37:33,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:33,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:37:33,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:37:33,983 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1297717062, now seen corresponding path program 1 times [2020-10-28 17:37:33,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:33,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561625218] [2020-10-28 17:37:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:34,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:37:39,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:37:39,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:37:39,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 17:37:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:37:39,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,329 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:39,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:37:39,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:37:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:37:39,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:37:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:37:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:37:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:37:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:37:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:37:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:37:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:37:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:39,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:39,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:39,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:39,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:39,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:39,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:39,557 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 17:37:39,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561625218] [2020-10-28 17:37:39,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:39,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:37:39,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899246966] [2020-10-28 17:37:39,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:37:39,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:39,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:37:39,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:37:39,559 INFO L87 Difference]: Start difference. First operand 31574 states and 42647 transitions. Second operand 8 states. [2020-10-28 17:37:39,872 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:37:44,695 INFO L93 Difference]: Finished difference Result 52199 states and 70970 transitions. [2020-10-28 17:37:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:37:44,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-28 17:37:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:37:44,896 INFO L225 Difference]: With dead ends: 52199 [2020-10-28 17:37:44,897 INFO L226 Difference]: Without dead ends: 36409 [2020-10-28 17:37:44,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:37:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36409 states. [2020-10-28 17:37:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36409 to 35919. [2020-10-28 17:37:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35919 states. [2020-10-28 17:37:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35919 states to 35919 states and 48403 transitions. [2020-10-28 17:37:48,315 INFO L78 Accepts]: Start accepts. Automaton has 35919 states and 48403 transitions. Word has length 98 [2020-10-28 17:37:48,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:37:48,316 INFO L481 AbstractCegarLoop]: Abstraction has 35919 states and 48403 transitions. [2020-10-28 17:37:48,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:37:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 35919 states and 48403 transitions. [2020-10-28 17:37:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:37:48,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:37:48,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:37:48,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:37:48,324 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:37:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:37:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1886828906, now seen corresponding path program 1 times [2020-10-28 17:37:48,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:37:48,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390260464] [2020-10-28 17:37:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:37:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:53,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 17:37:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:53,688 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:37:53,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:37:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:53,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:53,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:53,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:37:53,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:37:53,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:53,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:53,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:37:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:37:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:37:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-28 17:37:54,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:37:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:37:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:37:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:37:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:54,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:54,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:37:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:37:54,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:54,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:37:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:37:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:37:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:54,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:54,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:54,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:37:54,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:54,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:37:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:37:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:37:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:54,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:37:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:54,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:37:54,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:54,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:37:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:37:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:37:54,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:37:54,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:37:54,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:37:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:37:54,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:37:54,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:37:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:37:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:37:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:37:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:37:54,266 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 17:37:54,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390260464] [2020-10-28 17:37:54,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:37:54,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:37:54,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522524907] [2020-10-28 17:37:54,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:37:54,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:37:54,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:37:54,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:37:54,269 INFO L87 Difference]: Start difference. First operand 35919 states and 48403 transitions. Second operand 10 states. [2020-10-28 17:37:54,629 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:55,086 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:37:55,415 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:37:55,796 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:37:56,198 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:37:56,544 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:37:56,954 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:37:57,354 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:38:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:38:03,226 INFO L93 Difference]: Finished difference Result 66031 states and 88930 transitions. [2020-10-28 17:38:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 17:38:03,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-28 17:38:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:38:03,321 INFO L225 Difference]: With dead ends: 66031 [2020-10-28 17:38:03,322 INFO L226 Difference]: Without dead ends: 31045 [2020-10-28 17:38:03,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-28 17:38:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31045 states. [2020-10-28 17:38:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31045 to 30289. [2020-10-28 17:38:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30289 states. [2020-10-28 17:38:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30289 states to 30289 states and 40813 transitions. [2020-10-28 17:38:06,225 INFO L78 Accepts]: Start accepts. Automaton has 30289 states and 40813 transitions. Word has length 98 [2020-10-28 17:38:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:38:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 30289 states and 40813 transitions. [2020-10-28 17:38:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:38:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 30289 states and 40813 transitions. [2020-10-28 17:38:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 17:38:06,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:38:06,235 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 17:38:06,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:38:06,236 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:38:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:38:06,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1578940680, now seen corresponding path program 1 times [2020-10-28 17:38:06,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:38:06,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381386061] [2020-10-28 17:38:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:38:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:06,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:38:11,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:38:11,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:38:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,614 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:38:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:38:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:38:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:38:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:38:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:38:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:38:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:38:11,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:38:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:38:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:38:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 17:38:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:38:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:38:11,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:38:11,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:38:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:38:11,856 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 17:38:11,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381386061] [2020-10-28 17:38:11,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:38:11,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:38:11,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505256123] [2020-10-28 17:38:11,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:38:11,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:38:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:38:11,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:38:11,858 INFO L87 Difference]: Start difference. First operand 30289 states and 40813 transitions. Second operand 8 states. [2020-10-28 17:38:12,216 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:38:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:38:17,314 INFO L93 Difference]: Finished difference Result 54067 states and 74270 transitions. [2020-10-28 17:38:17,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:38:17,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-28 17:38:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:38:17,406 INFO L225 Difference]: With dead ends: 54067 [2020-10-28 17:38:17,406 INFO L226 Difference]: Without dead ends: 37143 [2020-10-28 17:38:17,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:38:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37143 states. [2020-10-28 17:38:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37143 to 36417. [2020-10-28 17:38:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36417 states.