/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:34:45,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:34:45,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:34:45,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:34:45,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:34:45,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:34:45,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:34:45,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:34:45,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:34:45,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:34:45,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:34:45,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:34:45,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:34:45,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:34:45,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:34:45,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:34:45,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:34:45,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:34:45,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:34:45,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:34:45,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:34:45,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:34:45,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:34:45,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:34:45,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:34:45,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:34:45,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:34:45,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:34:45,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:34:45,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:34:45,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:34:45,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:34:45,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:34:45,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:34:45,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:34:45,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:34:45,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:34:45,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:34:45,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:34:45,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:34:45,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:34:45,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:34:45,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:34:45,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:34:45,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:34:45,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:34:45,637 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:34:45,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:34:45,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:34:45,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:34:45,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:34:45,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:34:45,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:34:45,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:34:45,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:34:45,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:34:45,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:34:45,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:34:45,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:34:45,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:34:45,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:34:45,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:34:45,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:34:45,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:34:45,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:34:45,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:34:45,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:34:45,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:34:45,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:34:45,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:34:45,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:34:45,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:34:46,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:34:46,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:34:46,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:34:46,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:34:46,124 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:34:46,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-10-29 12:34:46,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9042cd269/61b4aab1bd5a4346a607da3c859a6cd4/FLAG5143b10ae [2020-10-29 12:34:46,820 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:34:46,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-10-29 12:34:46,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9042cd269/61b4aab1bd5a4346a607da3c859a6cd4/FLAG5143b10ae [2020-10-29 12:34:47,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9042cd269/61b4aab1bd5a4346a607da3c859a6cd4 [2020-10-29 12:34:47,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:34:47,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:34:47,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:34:47,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:34:47,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:34:47,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a8f8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47, skipping insertion in model container [2020-10-29 12:34:47,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:34:47,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:34:47,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:34:47,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:34:47,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:34:47,590 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:34:47,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47 WrapperNode [2020-10-29 12:34:47,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:34:47,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:34:47,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:34:47,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:34:47,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... [2020-10-29 12:34:47,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:34:47,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:34:47,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:34:47,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:34:47,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:34:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:34:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:34:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:34:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:34:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:34:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:34:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:34:47,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:34:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:34:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:34:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:34:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:34:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:34:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:34:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:34:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:34:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:34:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:34:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:34:48,489 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:34:48,490 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:34:48,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:34:48 BoogieIcfgContainer [2020-10-29 12:34:48,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:34:48,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:34:48,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:34:48,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:34:48,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:34:47" (1/3) ... [2020-10-29 12:34:48,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7151d8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:34:48, skipping insertion in model container [2020-10-29 12:34:48,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:34:47" (2/3) ... [2020-10-29 12:34:48,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7151d8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:34:48, skipping insertion in model container [2020-10-29 12:34:48,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:34:48" (3/3) ... [2020-10-29 12:34:48,502 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-10-29 12:34:48,518 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:34:48,524 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:34:48,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:34:48,578 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:34:48,578 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:34:48,578 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:34:48,578 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:34:48,578 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:34:48,579 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:34:48,579 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:34:48,579 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:34:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-10-29 12:34:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 12:34:48,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:34:48,629 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] [2020-10-29 12:34:48,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:34:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:34:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1333944120, now seen corresponding path program 1 times [2020-10-29 12:34:48,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:34:48,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430385118] [2020-10-29 12:34:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:34:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:34:49,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-29 12:34:49,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 12:34:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:34:49,495 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:34:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:34:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:34:49,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 12:34:49,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:34:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:34:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:34:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:34:49,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:34:49,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:34:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:34:49,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:34:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:49,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:34:49,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:34:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:34:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:34:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:34:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:34:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:34:49,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:34:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:34:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:34:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:34:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:34:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:34:49,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:34:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:49,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:34:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:34:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:34:49,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430385118] [2020-10-29 12:34:49,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:34:49,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:34:49,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188453159] [2020-10-29 12:34:49,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:34:49,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:34:49,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:34:49,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:34:49,838 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 6 states. [2020-10-29 12:34:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:34:50,428 INFO L93 Difference]: Finished difference Result 184 states and 264 transitions. [2020-10-29 12:34:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:34:50,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-29 12:34:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:34:50,441 INFO L225 Difference]: With dead ends: 184 [2020-10-29 12:34:50,442 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 12:34:50,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:34:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 12:34:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-10-29 12:34:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 12:34:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 144 transitions. [2020-10-29 12:34:50,503 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 144 transitions. Word has length 50 [2020-10-29 12:34:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:34:50,504 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 144 transitions. [2020-10-29 12:34:50,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:34:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 144 transitions. [2020-10-29 12:34:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 12:34:50,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:34:50,507 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] [2020-10-29 12:34:50,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:34:50,508 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:34:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:34:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1993475642, now seen corresponding path program 1 times [2020-10-29 12:34:50,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:34:50,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151586020] [2020-10-29 12:34:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:34:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 12:34:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-29 12:34:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:34:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:34:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:34:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,245 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:34:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:34:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:51,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:34:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:34:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:34:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:34:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:34:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:34:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:34:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:34:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:34:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:34:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:51,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:34:51,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:34:51,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:34:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:51,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:34:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:34:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:34:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:34:51,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:34:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:34:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:51,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:51,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:34:51,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:34:51,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:51,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:34:51,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:51,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:34:51,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151586020] [2020-10-29 12:34:51,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:34:51,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:34:51,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132296082] [2020-10-29 12:34:51,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:34:51,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:34:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:34:51,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:34:51,436 INFO L87 Difference]: Start difference. First operand 99 states and 144 transitions. Second operand 10 states. [2020-10-29 12:34:51,640 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 12:34:51,866 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 12:34:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:34:52,881 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2020-10-29 12:34:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:34:52,884 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-29 12:34:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:34:52,887 INFO L225 Difference]: With dead ends: 185 [2020-10-29 12:34:52,888 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 12:34:52,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:34:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 12:34:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-10-29 12:34:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 12:34:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2020-10-29 12:34:52,918 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 50 [2020-10-29 12:34:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:34:52,918 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2020-10-29 12:34:52,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:34:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-10-29 12:34:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 12:34:52,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:34:52,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:34:52,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:34:52,927 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:34:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:34:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash -217618876, now seen corresponding path program 1 times [2020-10-29 12:34:52,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:34:52,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466821207] [2020-10-29 12:34:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:34:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:53,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:53,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:57,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:57,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 12:34:57,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:34:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:34:57,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:57,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:34:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 12:34:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:34:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:34:58,163 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:34:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:34:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:34:58,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:34:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:58,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:34:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:34:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:34:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:34:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:58,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:58,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:34:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:34:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:58,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:34:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:34:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:34:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:34:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:58,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:58,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:58,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:34:58,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:58,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:34:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:34:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:34:58,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:34:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:58,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:58,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:34:58,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:58,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:34:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:34:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:34:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:34:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:34:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:58,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:58,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:58,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:34:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:34:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:58,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:34:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:34:58,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:34:58,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:34:58,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:34:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:34:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:34:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:34:58,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:34:58,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:34:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:34:58,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:34:58,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:34:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:34:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:34:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:34:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:34:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:34:58,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466821207] [2020-10-29 12:34:58,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:34:58,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:34:58,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338307888] [2020-10-29 12:34:58,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:34:58,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:34:58,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:34:58,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:34:58,494 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand 13 states. [2020-10-29 12:34:58,722 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:34:58,922 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:34:59,104 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 12:35:00,580 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 12:35:00,746 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 12:35:00,918 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 12:35:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:03,524 INFO L93 Difference]: Finished difference Result 614 states and 852 transitions. [2020-10-29 12:35:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 12:35:03,525 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-29 12:35:03,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:03,534 INFO L225 Difference]: With dead ends: 614 [2020-10-29 12:35:03,534 INFO L226 Difference]: Without dead ends: 546 [2020-10-29 12:35:03,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 12:35:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-29 12:35:03,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 507. [2020-10-29 12:35:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-29 12:35:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 714 transitions. [2020-10-29 12:35:03,614 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 714 transitions. Word has length 66 [2020-10-29 12:35:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:03,615 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 714 transitions. [2020-10-29 12:35:03,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:35:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 714 transitions. [2020-10-29 12:35:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:35:03,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:03,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:35:03,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:35:03,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:03,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1958000981, now seen corresponding path program 1 times [2020-10-29 12:35:03,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:03,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681942755] [2020-10-29 12:35:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:08,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:35:08,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:35:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:08,807 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:08,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:08,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:08,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:35:08,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:08,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:08,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:08,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:35:08,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:08,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:08,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:08,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:35:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:08,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:09,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:09,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:09,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:09,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:09,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:09,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:35:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:09,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:09,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:35:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:35:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:09,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:09,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:35:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:09,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:35:09,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681942755] [2020-10-29 12:35:09,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:35:09,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:35:09,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142746933] [2020-10-29 12:35:09,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:35:09,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:09,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:35:09,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:35:09,097 INFO L87 Difference]: Start difference. First operand 507 states and 714 transitions. Second operand 9 states. [2020-10-29 12:35:09,313 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:35:10,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:10,644 INFO L93 Difference]: Finished difference Result 1425 states and 2020 transitions. [2020-10-29 12:35:10,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:35:10,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-29 12:35:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:10,660 INFO L225 Difference]: With dead ends: 1425 [2020-10-29 12:35:10,660 INFO L226 Difference]: Without dead ends: 949 [2020-10-29 12:35:10,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:35:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-29 12:35:10,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 911. [2020-10-29 12:35:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-29 12:35:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1279 transitions. [2020-10-29 12:35:10,767 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1279 transitions. Word has length 67 [2020-10-29 12:35:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:10,767 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 1279 transitions. [2020-10-29 12:35:10,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:35:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1279 transitions. [2020-10-29 12:35:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 12:35:10,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:10,769 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] [2020-10-29 12:35:10,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:35:10,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:10,770 INFO L82 PathProgramCache]: Analyzing trace with hash 616882373, now seen corresponding path program 1 times [2020-10-29 12:35:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195319110] [2020-10-29 12:35:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:10,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 12:35:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:35:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3929 [2020-10-29 12:35:14,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:14,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 12:35:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 12:35:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:14,889 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:14,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:14,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:14,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:14,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:35:14,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:14,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:14,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:14,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:14,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:14,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:14,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:14,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:35:14,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:14,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:14,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:35:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:15,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:15,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:15,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:35:15,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:15,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:15,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:15,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:15,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:35:15,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:15,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:35:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:15,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:15,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:15,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:35:15,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:15,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:15,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:15,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:35:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:15,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:15,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:15,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:35:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:15,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:35:15,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195319110] [2020-10-29 12:35:15,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:35:15,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:35:15,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905522394] [2020-10-29 12:35:15,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:35:15,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:15,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:35:15,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:35:15,173 INFO L87 Difference]: Start difference. First operand 911 states and 1279 transitions. Second operand 9 states. [2020-10-29 12:35:15,341 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:35:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:16,502 INFO L93 Difference]: Finished difference Result 2541 states and 3567 transitions. [2020-10-29 12:35:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:35:16,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-29 12:35:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:16,514 INFO L225 Difference]: With dead ends: 2541 [2020-10-29 12:35:16,515 INFO L226 Difference]: Without dead ends: 1661 [2020-10-29 12:35:16,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:35:16,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2020-10-29 12:35:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1602. [2020-10-29 12:35:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2020-10-29 12:35:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2219 transitions. [2020-10-29 12:35:16,644 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2219 transitions. Word has length 67 [2020-10-29 12:35:16,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:16,644 INFO L481 AbstractCegarLoop]: Abstraction has 1602 states and 2219 transitions. [2020-10-29 12:35:16,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:35:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2219 transitions. [2020-10-29 12:35:16,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 12:35:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:16,646 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] [2020-10-29 12:35:16,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:35:16,646 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:16,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1890880932, now seen corresponding path program 1 times [2020-10-29 12:35:16,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:16,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129324502] [2020-10-29 12:35:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:17,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:17,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 12:35:17,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:35:17,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-29 12:35:17,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:17,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:17,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:17,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 12:35:17,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:35:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:17,846 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:17,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:17,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:35:17,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:17,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:17,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:17,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:17,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:17,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:17,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:17,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:35:17,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:17,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:35:17,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:17,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:17,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:17,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:17,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:35:17,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:17,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:17,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:35:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:17,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:17,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:35:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:18,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:18,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:18,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:18,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:18,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:35:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:18,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:35:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:35:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:18,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:35:18,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129324502] [2020-10-29 12:35:18,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:35:18,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:35:18,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783912153] [2020-10-29 12:35:18,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:35:18,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:18,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:35:18,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:35:18,042 INFO L87 Difference]: Start difference. First operand 1602 states and 2219 transitions. Second operand 9 states. [2020-10-29 12:35:18,207 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:35:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:19,686 INFO L93 Difference]: Finished difference Result 4456 states and 6151 transitions. [2020-10-29 12:35:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:35:19,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-29 12:35:19,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:19,705 INFO L225 Difference]: With dead ends: 4456 [2020-10-29 12:35:19,706 INFO L226 Difference]: Without dead ends: 2885 [2020-10-29 12:35:19,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:35:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-10-29 12:35:19,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2798. [2020-10-29 12:35:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2798 states. [2020-10-29 12:35:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3793 transitions. [2020-10-29 12:35:19,958 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3793 transitions. Word has length 68 [2020-10-29 12:35:19,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:19,959 INFO L481 AbstractCegarLoop]: Abstraction has 2798 states and 3793 transitions. [2020-10-29 12:35:19,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:35:19,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3793 transitions. [2020-10-29 12:35:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 12:35:19,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:19,960 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] [2020-10-29 12:35:19,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:35:19,960 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash -120082743, now seen corresponding path program 1 times [2020-10-29 12:35:19,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:19,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920784168] [2020-10-29 12:35:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:20,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 12:35:20,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:35:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-29 12:35:20,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:20,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 12:35:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 12:35:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:20,789 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:35:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:20,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:20,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:20,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:20,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:35:20,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:20,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:20,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:35:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:20,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:20,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:20,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:35:20,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:20,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:35:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:35:20,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:20,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:20,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:35:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:35:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:20,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:35:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:20,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:20,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:20,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:35:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:20,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:35:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:35:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:35:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:21,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:21,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:35:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:21,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:21,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:21,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:35:21,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920784168] [2020-10-29 12:35:21,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:35:21,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:35:21,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079832031] [2020-10-29 12:35:21,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:35:21,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:35:21,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:35:21,036 INFO L87 Difference]: Start difference. First operand 2798 states and 3793 transitions. Second operand 12 states. [2020-10-29 12:35:21,234 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 12:35:21,417 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 12:35:21,758 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 12:35:22,128 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 12:35:22,374 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 12:35:22,523 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 12:35:23,147 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 12:35:23,291 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 12:35:23,466 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 12:35:23,618 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 12:35:23,867 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 12:35:24,018 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 12:35:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:28,741 INFO L93 Difference]: Finished difference Result 17565 states and 24939 transitions. [2020-10-29 12:35:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 12:35:28,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-29 12:35:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:28,839 INFO L225 Difference]: With dead ends: 17565 [2020-10-29 12:35:28,840 INFO L226 Difference]: Without dead ends: 14798 [2020-10-29 12:35:28,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 12:35:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14798 states. [2020-10-29 12:35:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14798 to 14659. [2020-10-29 12:35:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14659 states. [2020-10-29 12:35:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14659 states to 14659 states and 19048 transitions. [2020-10-29 12:35:30,240 INFO L78 Accepts]: Start accepts. Automaton has 14659 states and 19048 transitions. Word has length 69 [2020-10-29 12:35:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:30,240 INFO L481 AbstractCegarLoop]: Abstraction has 14659 states and 19048 transitions. [2020-10-29 12:35:30,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:35:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 14659 states and 19048 transitions. [2020-10-29 12:35:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:35:30,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:30,242 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] [2020-10-29 12:35:30,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:35:30,243 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash -481616789, now seen corresponding path program 1 times [2020-10-29 12:35:30,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:30,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874937959] [2020-10-29 12:35:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:35:30,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-29 12:35:30,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:35:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-29 12:35:30,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:35:30,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:30,803 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:30,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:35:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:30,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:35:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:30,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:35:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:30,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:35:30,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:35:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:35:30,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:35:30,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:35:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:30,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:30,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:30,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:35:30,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:30,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:35:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:35:31,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874937959] [2020-10-29 12:35:31,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:35:31,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:35:31,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800303225] [2020-10-29 12:35:31,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:35:31,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:35:31,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:35:31,007 INFO L87 Difference]: Start difference. First operand 14659 states and 19048 transitions. Second operand 12 states. [2020-10-29 12:35:31,768 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 12:35:31,925 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 12:35:32,116 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:35:32,291 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 12:35:33,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:33,763 INFO L93 Difference]: Finished difference Result 18375 states and 24739 transitions. [2020-10-29 12:35:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:35:33,764 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-29 12:35:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:33,876 INFO L225 Difference]: With dead ends: 18375 [2020-10-29 12:35:33,876 INFO L226 Difference]: Without dead ends: 18372 [2020-10-29 12:35:33,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:35:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18372 states. [2020-10-29 12:35:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18372 to 16387. [2020-10-29 12:35:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16387 states. [2020-10-29 12:35:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16387 states to 16387 states and 20776 transitions. [2020-10-29 12:35:35,523 INFO L78 Accepts]: Start accepts. Automaton has 16387 states and 20776 transitions. Word has length 70 [2020-10-29 12:35:35,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:35,525 INFO L481 AbstractCegarLoop]: Abstraction has 16387 states and 20776 transitions. [2020-10-29 12:35:35,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:35:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 16387 states and 20776 transitions. [2020-10-29 12:35:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 12:35:35,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:35,533 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] [2020-10-29 12:35:35,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:35:35,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash 182904460, now seen corresponding path program 1 times [2020-10-29 12:35:35,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:35,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821188427] [2020-10-29 12:35:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:35,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:35,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 12:35:35,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 12:35:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:35,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:35:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:35:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:35,915 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:35,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:35,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:35:35,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:35,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:35,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:35,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:35,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:35,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:35:35,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:35,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:35,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:35,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:35,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:35:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:36,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:36,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:36,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:35:36,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:36,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:36,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:35:36,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:36,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:35:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:35:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:36,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:35:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:35:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:36,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:35:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:36,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:35:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:36,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:36,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:35:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:35:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:35:36,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821188427] [2020-10-29 12:35:36,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:35:36,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:35:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35996282] [2020-10-29 12:35:36,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:35:36,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:36,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:35:36,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:35:36,153 INFO L87 Difference]: Start difference. First operand 16387 states and 20776 transitions. Second operand 9 states. [2020-10-29 12:35:36,323 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:35:37,394 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:35:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:39,906 INFO L93 Difference]: Finished difference Result 45481 states and 58331 transitions. [2020-10-29 12:35:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 12:35:39,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-29 12:35:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:40,039 INFO L225 Difference]: With dead ends: 45481 [2020-10-29 12:35:40,040 INFO L226 Difference]: Without dead ends: 29174 [2020-10-29 12:35:40,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:35:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29174 states. [2020-10-29 12:35:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29174 to 28951. [2020-10-29 12:35:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28951 states. [2020-10-29 12:35:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28951 states to 28951 states and 37064 transitions. [2020-10-29 12:35:42,654 INFO L78 Accepts]: Start accepts. Automaton has 28951 states and 37064 transitions. Word has length 71 [2020-10-29 12:35:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:42,655 INFO L481 AbstractCegarLoop]: Abstraction has 28951 states and 37064 transitions. [2020-10-29 12:35:42,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:35:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 28951 states and 37064 transitions. [2020-10-29 12:35:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:35:42,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:42,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:35:42,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:35:42,668 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash 99524995, now seen corresponding path program 1 times [2020-10-29 12:35:42,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:42,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405798228] [2020-10-29 12:35:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:35:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 12:35:44,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:45,175 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:35:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:35:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:45,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:35:45,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:35:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:45,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:45,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:45,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:35:45,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:35:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:35:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:35:45,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:35:45,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:35:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:35:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:45,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:45,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:35:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:35:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:35:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:35:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:35:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:35:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:45,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:35:45,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:35:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:45,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:35:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 12:35:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:45,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:45,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:45,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:45,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:45,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:35:45,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:35:45,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:35:45,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405798228] [2020-10-29 12:35:45,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:35:45,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:35:45,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160576803] [2020-10-29 12:35:45,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:35:45,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:35:45,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:35:45,575 INFO L87 Difference]: Start difference. First operand 28951 states and 37064 transitions. Second operand 11 states. [2020-10-29 12:35:45,752 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:35:46,487 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:35:48,560 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:35:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:35:50,377 INFO L93 Difference]: Finished difference Result 66536 states and 85381 transitions. [2020-10-29 12:35:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 12:35:50,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-29 12:35:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:35:50,556 INFO L225 Difference]: With dead ends: 66536 [2020-10-29 12:35:50,556 INFO L226 Difference]: Without dead ends: 42321 [2020-10-29 12:35:50,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:35:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42321 states. [2020-10-29 12:35:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42321 to 41987. [2020-10-29 12:35:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41987 states. [2020-10-29 12:35:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41987 states to 41987 states and 53616 transitions. [2020-10-29 12:35:53,706 INFO L78 Accepts]: Start accepts. Automaton has 41987 states and 53616 transitions. Word has length 108 [2020-10-29 12:35:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:35:53,706 INFO L481 AbstractCegarLoop]: Abstraction has 41987 states and 53616 transitions. [2020-10-29 12:35:53,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:35:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 41987 states and 53616 transitions. [2020-10-29 12:35:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:35:53,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:35:53,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:35:53,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:35:53,716 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:35:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:35:53,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1846154966, now seen corresponding path program 1 times [2020-10-29 12:35:53,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:35:53,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105722259] [2020-10-29 12:35:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:35:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:53,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:58,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 12:35:58,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:35:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:35:58,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:58,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:35:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:35:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 12:35:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:58,971 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:35:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:35:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:35:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:35:59,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:35:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:35:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:35:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:59,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:35:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:35:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:59,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:35:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:35:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:35:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:35:59,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:35:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:35:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:35:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:35:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:35:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:35:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:35:59,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:35:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:59,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:35:59,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:35:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:35:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:35:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:35:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:59,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:35:59,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:35:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:35:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:35:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:35:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:35:59,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:35:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:35:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:35:59,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:35:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 12:35:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:35:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:35:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:35:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:35:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:35:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:35:59,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:35:59,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:35:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:35:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:35:59,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:35:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:35:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:35:59,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105722259] [2020-10-29 12:35:59,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:35:59,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:35:59,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380564496] [2020-10-29 12:35:59,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:35:59,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:35:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:35:59,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:35:59,499 INFO L87 Difference]: Start difference. First operand 41987 states and 53616 transitions. Second operand 15 states. [2020-10-29 12:35:59,733 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 12:36:00,078 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 12:36:00,801 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 125 [2020-10-29 12:36:01,331 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 12:36:02,828 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 127 [2020-10-29 12:36:04,518 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 12:36:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:36:08,637 INFO L93 Difference]: Finished difference Result 128339 states and 163786 transitions. [2020-10-29 12:36:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 12:36:08,638 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-29 12:36:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:36:09,420 INFO L225 Difference]: With dead ends: 128339 [2020-10-29 12:36:09,420 INFO L226 Difference]: Without dead ends: 105726 [2020-10-29 12:36:09,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 12:36:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105726 states. [2020-10-29 12:36:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105726 to 90375. [2020-10-29 12:36:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90375 states. [2020-10-29 12:36:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90375 states to 90375 states and 115537 transitions. [2020-10-29 12:36:16,067 INFO L78 Accepts]: Start accepts. Automaton has 90375 states and 115537 transitions. Word has length 109 [2020-10-29 12:36:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:36:16,068 INFO L481 AbstractCegarLoop]: Abstraction has 90375 states and 115537 transitions. [2020-10-29 12:36:16,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:36:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 90375 states and 115537 transitions. [2020-10-29 12:36:16,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:36:16,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:36:16,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:36:16,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:36:16,086 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:36:16,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:36:16,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1887071632, now seen corresponding path program 1 times [2020-10-29 12:36:16,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:36:16,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414726155] [2020-10-29 12:36:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:36:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:17,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 12:36:21,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:36:21,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:36:21,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:36:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:36:21,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 12:36:21,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:21,429 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:36:21,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:36:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:36:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:36:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:36:21,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:36:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:36:21,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:36:21,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:36:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:36:21,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:21,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:36:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:21,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:36:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:36:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:36:21,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:36:21,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:36:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:36:21,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:36:21,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:36:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:36:21,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:36:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:36:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:36:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:21,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:36:21,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:36:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:36:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:36:21,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:36:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:36:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:21,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:36:21,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:36:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:36:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 12:36:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:36:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:36:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:36:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:36:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:36:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 12:36:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:21,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:21,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:36:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:36:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 12:36:21,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414726155] [2020-10-29 12:36:21,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:36:21,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:36:21,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12813328] [2020-10-29 12:36:21,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:36:21,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:36:21,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:36:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:36:21,941 INFO L87 Difference]: Start difference. First operand 90375 states and 115537 transitions. Second operand 15 states. [2020-10-29 12:36:22,308 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-29 12:36:22,487 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:36:23,037 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2020-10-29 12:36:23,840 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-10-29 12:36:24,165 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-29 12:36:24,507 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2020-10-29 12:36:25,219 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-29 12:36:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:36:34,820 INFO L93 Difference]: Finished difference Result 226789 states and 291468 transitions. [2020-10-29 12:36:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 12:36:34,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-29 12:36:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:36:35,434 INFO L225 Difference]: With dead ends: 226789 [2020-10-29 12:36:35,434 INFO L226 Difference]: Without dead ends: 137920 [2020-10-29 12:36:35,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 12:36:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137920 states. [2020-10-29 12:36:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137920 to 134889. [2020-10-29 12:36:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134889 states. [2020-10-29 12:36:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134889 states to 134889 states and 171238 transitions. [2020-10-29 12:36:45,106 INFO L78 Accepts]: Start accepts. Automaton has 134889 states and 171238 transitions. Word has length 109 [2020-10-29 12:36:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:36:45,106 INFO L481 AbstractCegarLoop]: Abstraction has 134889 states and 171238 transitions. [2020-10-29 12:36:45,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:36:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 134889 states and 171238 transitions. [2020-10-29 12:36:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:36:45,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:36:45,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:36:45,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:36:45,434 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:36:45,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:36:45,434 INFO L82 PathProgramCache]: Analyzing trace with hash 697551070, now seen corresponding path program 1 times [2020-10-29 12:36:45,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:36:45,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048710124] [2020-10-29 12:36:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:36:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:50,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 12:36:50,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:36:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:36:50,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:50,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:36:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:36:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 12:36:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:50,701 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:36:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:36:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:50,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:50,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:36:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:36:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:50,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:36:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:36:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:36:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:36:50,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:36:50,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:50,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:36:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:50,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:36:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:50,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:50,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:50,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:50,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:36:50,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:50,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:50,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:50,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:36:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:50,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:36:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:36:50,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:36:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:36:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:36:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:36:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:36:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:36:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:36:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:36:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:36:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:36:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:36:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:36:51,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:36:51,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:51,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:36:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:36:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:51,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:36:51,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:36:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:36:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:36:51,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:36:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:36:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:36:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 12:36:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:36:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:36:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:36:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:36:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:36:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 12:36:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:36:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:36:51,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:36:51,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:36:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:36:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 12:36:51,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048710124] [2020-10-29 12:36:51,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:36:51,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 12:36:51,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937427159] [2020-10-29 12:36:51,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 12:36:51,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:36:51,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 12:36:51,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:36:51,160 INFO L87 Difference]: Start difference. First operand 134889 states and 171238 transitions. Second operand 15 states. [2020-10-29 12:36:51,386 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-29 12:36:51,712 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 12:36:52,234 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 125 [2020-10-29 12:36:52,677 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 12:36:53,181 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 12:36:54,240 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 127 [2020-10-29 12:36:54,823 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:36:57,229 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 12:37:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:37:15,291 INFO L93 Difference]: Finished difference Result 478513 states and 609543 transitions. [2020-10-29 12:37:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 12:37:15,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-29 12:37:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:37:17,333 INFO L225 Difference]: With dead ends: 478513 [2020-10-29 12:37:17,333 INFO L226 Difference]: Without dead ends: 349471 [2020-10-29 12:37:17,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=464, Invalid=1986, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 12:37:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349471 states. [2020-10-29 12:37:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349471 to 336913. [2020-10-29 12:37:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336913 states. [2020-10-29 12:37:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336913 states to 336913 states and 430033 transitions. [2020-10-29 12:37:41,874 INFO L78 Accepts]: Start accepts. Automaton has 336913 states and 430033 transitions. Word has length 109 [2020-10-29 12:37:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:37:41,875 INFO L481 AbstractCegarLoop]: Abstraction has 336913 states and 430033 transitions. [2020-10-29 12:37:41,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 12:37:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 336913 states and 430033 transitions. [2020-10-29 12:37:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 12:37:41,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:37:41,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:37:41,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:37:41,927 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:37:41,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:37:41,927 INFO L82 PathProgramCache]: Analyzing trace with hash -34416356, now seen corresponding path program 1 times [2020-10-29 12:37:41,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:37:41,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124396933] [2020-10-29 12:37:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:37:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 12:37:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:37:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:37:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:46,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:37:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:37:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 12:37:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,144 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 12:37:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:37:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:37:47,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:37:47,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:37:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:37:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:37:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:37:47,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:37:47,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:37:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:37:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:37:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:37:47,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:37:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:37:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:37:47,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:37:47,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:37:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:37:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:37:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:37:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:37:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:37:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:37:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:37:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 12:37:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:37:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:37:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:37:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:37:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:37:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:37:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:37:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:37:47,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:37:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:37:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:37:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:37:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 12:37:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:37:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 12:37:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:37:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:37:47,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:37:47,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:37:47,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:37:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:37:47,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:37:47,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:37:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:37:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:37:47,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:37:47,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:37:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 12:37:47,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124396933] [2020-10-29 12:37:47,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:37:47,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:37:47,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428156641] [2020-10-29 12:37:47,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:37:47,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:37:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:37:47,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:37:47,432 INFO L87 Difference]: Start difference. First operand 336913 states and 430033 transitions. Second operand 13 states. [2020-10-29 12:37:47,632 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-29 12:37:47,863 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 12:37:48,110 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:37:48,435 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:37:48,744 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2020-10-29 12:37:49,290 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-29 12:37:51,475 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 12:37:51,717 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-29 12:37:54,656 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 12:37:54,862 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 12:37:55,220 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121