/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:32:48,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:32:48,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:32:48,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:32:48,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:32:48,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:32:48,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:32:48,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:32:48,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:32:48,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:32:48,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:32:48,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:32:48,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:32:48,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:32:48,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:32:48,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:32:48,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:32:48,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:32:48,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:32:48,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:32:48,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:32:48,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:32:48,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:32:48,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:32:48,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:32:48,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:32:48,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:32:48,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:32:48,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:32:48,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:32:48,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:32:48,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:32:48,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:32:48,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:32:48,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:32:48,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:32:48,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:32:48,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:32:48,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:32:48,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:32:48,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:32:48,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:32:48,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:32:48,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:32:48,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:32:48,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:32:48,659 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:32:48,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:32:48,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:32:48,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:32:48,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:32:48,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:32:48,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:32:48,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:32:48,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:32:48,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:32:48,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:32:48,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:32:48,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:32:48,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:32:48,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:32:48,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:32:48,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:32:48,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:32:48,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:32:48,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:32:48,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:32:48,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:32:48,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:32:48,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:32:48,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:32:48,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:32:49,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:32:49,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:32:49,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:32:49,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:32:49,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:32:49,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-28 17:32:49,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7cf98dd/ac024397581a4818967b708cc2bf7a3b/FLAGed496e37e [2020-10-28 17:32:49,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:32:49,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-28 17:32:49,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7cf98dd/ac024397581a4818967b708cc2bf7a3b/FLAGed496e37e [2020-10-28 17:32:50,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f7cf98dd/ac024397581a4818967b708cc2bf7a3b [2020-10-28 17:32:50,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:32:50,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:32:50,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:32:50,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:32:50,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:32:50,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787dc38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50, skipping insertion in model container [2020-10-28 17:32:50,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:32:50,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:32:50,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:32:50,632 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:32:50,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:32:50,809 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:32:50,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50 WrapperNode [2020-10-28 17:32:50,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:32:50,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:32:50,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:32:50,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:32:50,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... [2020-10-28 17:32:50,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:32:50,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:32:50,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:32:50,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:32:50,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:32:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:32:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:32:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:32:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:32:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:32:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:32:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:32:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:32:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:32:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:32:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:32:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:32:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:32:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:32:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:32:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:32:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:32:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:32:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:32:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:32:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:32:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:32:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:32:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:32:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:32:52,026 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:32:52,027 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:32:52,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:32:52 BoogieIcfgContainer [2020-10-28 17:32:52,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:32:52,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:32:52,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:32:52,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:32:52,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:32:50" (1/3) ... [2020-10-28 17:32:52,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c202ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:32:52, skipping insertion in model container [2020-10-28 17:32:52,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:32:50" (2/3) ... [2020-10-28 17:32:52,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c202ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:32:52, skipping insertion in model container [2020-10-28 17:32:52,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:32:52" (3/3) ... [2020-10-28 17:32:52,038 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-28 17:32:52,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:32:52,057 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:32:52,070 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:32:52,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:32:52,100 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:32:52,100 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:32:52,100 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:32:52,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:32:52,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:32:52,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:32:52,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:32:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2020-10-28 17:32:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 17:32:52,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:52,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:52,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:52,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:52,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1884476108, now seen corresponding path program 1 times [2020-10-28 17:32:52,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:52,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822060629] [2020-10-28 17:32:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:52,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:32:53,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-28 17:32:53,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 17:32:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:32:53,585 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:32:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:53,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 17:32:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:32:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:32:53,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:53,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:32:53,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:32:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:53,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 17:32:53,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:32:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:53,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:53,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:53,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:32:53,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:53,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:32:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:54,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:32:54,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:32:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:32:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:54,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:32:54,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822060629] [2020-10-28 17:32:54,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:32:54,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:32:54,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63100905] [2020-10-28 17:32:54,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:32:54,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:54,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:32:54,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:32:54,067 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 6 states. [2020-10-28 17:32:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:55,341 INFO L93 Difference]: Finished difference Result 257 states and 405 transitions. [2020-10-28 17:32:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:32:55,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-28 17:32:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:55,355 INFO L225 Difference]: With dead ends: 257 [2020-10-28 17:32:55,356 INFO L226 Difference]: Without dead ends: 157 [2020-10-28 17:32:55,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:32:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-28 17:32:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2020-10-28 17:32:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 17:32:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 232 transitions. [2020-10-28 17:32:55,437 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 232 transitions. Word has length 59 [2020-10-28 17:32:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:55,438 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 232 transitions. [2020-10-28 17:32:55,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:32:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 232 transitions. [2020-10-28 17:32:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 17:32:55,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:55,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:55,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:32:55,451 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:55,452 INFO L82 PathProgramCache]: Analyzing trace with hash -359507190, now seen corresponding path program 1 times [2020-10-28 17:32:55,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:55,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943235858] [2020-10-28 17:32:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:32:56,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-28 17:32:56,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:32:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:32:56,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:32:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:32:56,399 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:32:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:32:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:32:56,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:32:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:32:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:32:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 17:32:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:32:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:32:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:32:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 17:32:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:32:56,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:56,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 17:32:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:56,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:56,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:32:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 17:32:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:56,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:32:56,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:32:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:56,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:32:56,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:32:56,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:32:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:32:56,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:32:56,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:32:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:32:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:32:56,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:32:56,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:32:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:32:56,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943235858] [2020-10-28 17:32:56,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:32:56,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:32:56,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290164543] [2020-10-28 17:32:56,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:32:56,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:32:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:32:56,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:32:56,717 INFO L87 Difference]: Start difference. First operand 145 states and 232 transitions. Second operand 10 states. [2020-10-28 17:32:57,361 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:32:57,698 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 17:32:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:32:59,270 INFO L93 Difference]: Finished difference Result 258 states and 404 transitions. [2020-10-28 17:32:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:32:59,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-28 17:32:59,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:32:59,275 INFO L225 Difference]: With dead ends: 258 [2020-10-28 17:32:59,276 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 17:32:59,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:32:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 17:32:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 145. [2020-10-28 17:32:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 17:32:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 211 transitions. [2020-10-28 17:32:59,306 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 211 transitions. Word has length 59 [2020-10-28 17:32:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:32:59,308 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 211 transitions. [2020-10-28 17:32:59,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:32:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 211 transitions. [2020-10-28 17:32:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 17:32:59,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:32:59,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:32:59,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:32:59,311 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:32:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:32:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash 547360494, now seen corresponding path program 1 times [2020-10-28 17:32:59,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:32:59,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018361662] [2020-10-28 17:32:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:32:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:32:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:32:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 17:33:04,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:33:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:33:04,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:33:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:33:04,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:33:04,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:04,644 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:33:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:04,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:33:04,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:33:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:33:04,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:33:04,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:04,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:04,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:33:04,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:33:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:04,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:33:04,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:33:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:04,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:33:04,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:04,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:33:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:33:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:33:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:33:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:33:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:33:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:33:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 17:33:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:04,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:04,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:04,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:33:04,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:04,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:33:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:33:04,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018361662] [2020-10-28 17:33:04,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:33:04,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:33:04,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510911775] [2020-10-28 17:33:04,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:04,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:04,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:04,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:04,966 INFO L87 Difference]: Start difference. First operand 145 states and 211 transitions. Second operand 9 states. [2020-10-28 17:33:05,258 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:33:07,644 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:33:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:07,883 INFO L93 Difference]: Finished difference Result 339 states and 509 transitions. [2020-10-28 17:33:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:33:07,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-28 17:33:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:07,888 INFO L225 Difference]: With dead ends: 339 [2020-10-28 17:33:07,888 INFO L226 Difference]: Without dead ends: 253 [2020-10-28 17:33:07,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:33:07,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-28 17:33:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 223. [2020-10-28 17:33:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-28 17:33:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 332 transitions. [2020-10-28 17:33:07,947 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 332 transitions. Word has length 79 [2020-10-28 17:33:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:07,948 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 332 transitions. [2020-10-28 17:33:07,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 332 transitions. [2020-10-28 17:33:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 17:33:07,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:07,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:07,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:33:07,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash -907613015, now seen corresponding path program 1 times [2020-10-28 17:33:07,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:07,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14557450] [2020-10-28 17:33:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:11,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 17:33:13,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:33:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:33:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:33:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 17:33:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:13,353 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:33:13,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:13,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:13,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:33:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:33:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:33:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:13,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:33:13,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:13,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:33:13,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:33:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:33:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:13,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:13,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:33:13,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:33:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:13,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:33:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:33:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:33:13,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:33:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:33:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:33:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:33:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:33:13,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:13,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:33:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:33:13,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14557450] [2020-10-28 17:33:13,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:33:13,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:33:13,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870199414] [2020-10-28 17:33:13,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:13,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:13,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:13,709 INFO L87 Difference]: Start difference. First operand 223 states and 332 transitions. Second operand 9 states. [2020-10-28 17:33:14,031 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:33:14,386 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-28 17:33:14,811 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:33:15,439 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-28 17:33:16,541 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:33:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:19,769 INFO L93 Difference]: Finished difference Result 806 states and 1208 transitions. [2020-10-28 17:33:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:33:19,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-10-28 17:33:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:19,774 INFO L225 Difference]: With dead ends: 806 [2020-10-28 17:33:19,775 INFO L226 Difference]: Without dead ends: 601 [2020-10-28 17:33:19,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:33:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-28 17:33:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 542. [2020-10-28 17:33:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-10-28 17:33:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 802 transitions. [2020-10-28 17:33:19,840 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 802 transitions. Word has length 81 [2020-10-28 17:33:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:19,841 INFO L481 AbstractCegarLoop]: Abstraction has 542 states and 802 transitions. [2020-10-28 17:33:19,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 802 transitions. [2020-10-28 17:33:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 17:33:19,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:19,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:19,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:33:19,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1257774369, now seen corresponding path program 1 times [2020-10-28 17:33:19,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:19,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914952386] [2020-10-28 17:33:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:24,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:24,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 17:33:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:33:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:33:24,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:24,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:33:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:33:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,219 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:33:25,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:25,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:25,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:33:25,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:25,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:33:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:33:25,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:33:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:33:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:33:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:33:25,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:33:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:25,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:25,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:33:25,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:25,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:25,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:33:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:25,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:33:25,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:33:25,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:33:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:33:25,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:33:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:25,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:25,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:33:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:33:25,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914952386] [2020-10-28 17:33:25,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:33:25,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:33:25,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555236984] [2020-10-28 17:33:25,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:25,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:25,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:25,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:25,526 INFO L87 Difference]: Start difference. First operand 542 states and 802 transitions. Second operand 9 states. [2020-10-28 17:33:25,860 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:33:26,185 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:33:26,545 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:33:26,863 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:33:27,939 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:33:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:30,182 INFO L93 Difference]: Finished difference Result 1679 states and 2498 transitions. [2020-10-28 17:33:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:33:30,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-10-28 17:33:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:30,194 INFO L225 Difference]: With dead ends: 1679 [2020-10-28 17:33:30,194 INFO L226 Difference]: Without dead ends: 1183 [2020-10-28 17:33:30,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:33:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-10-28 17:33:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1087. [2020-10-28 17:33:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2020-10-28 17:33:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1580 transitions. [2020-10-28 17:33:30,288 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1580 transitions. Word has length 81 [2020-10-28 17:33:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:30,289 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1580 transitions. [2020-10-28 17:33:30,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1580 transitions. [2020-10-28 17:33:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 17:33:30,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:30,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:30,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:33:30,293 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:30,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1622258439, now seen corresponding path program 1 times [2020-10-28 17:33:30,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:30,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642237928] [2020-10-28 17:33:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 17:33:35,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 17:33:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,633 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:33:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:33:35,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:33:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:33:35,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:33:35,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:33:35,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:33:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:33:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:33:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:33:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:33:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:33:35,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:33:35,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:33:35,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:33:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:33:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:35,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:35,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:35,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:35,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:35,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:33:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:33:35,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642237928] [2020-10-28 17:33:35,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:33:35,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:33:35,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132890094] [2020-10-28 17:33:35,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:35,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:35,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:35,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:35,930 INFO L87 Difference]: Start difference. First operand 1087 states and 1580 transitions. Second operand 9 states. [2020-10-28 17:33:36,252 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:33:36,569 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:33:36,909 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:33:37,237 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 17:33:38,186 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:33:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:40,455 INFO L93 Difference]: Finished difference Result 3181 states and 4655 transitions. [2020-10-28 17:33:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:33:40,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-28 17:33:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:40,471 INFO L225 Difference]: With dead ends: 3181 [2020-10-28 17:33:40,471 INFO L226 Difference]: Without dead ends: 2123 [2020-10-28 17:33:40,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:33:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-10-28 17:33:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1954. [2020-10-28 17:33:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2020-10-28 17:33:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2809 transitions. [2020-10-28 17:33:40,639 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2809 transitions. Word has length 82 [2020-10-28 17:33:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:40,640 INFO L481 AbstractCegarLoop]: Abstraction has 1954 states and 2809 transitions. [2020-10-28 17:33:40,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2809 transitions. [2020-10-28 17:33:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 17:33:40,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:40,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:40,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:33:40,649 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:40,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:40,650 INFO L82 PathProgramCache]: Analyzing trace with hash -634440124, now seen corresponding path program 1 times [2020-10-28 17:33:40,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:40,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500238123] [2020-10-28 17:33:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 17:33:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:33:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4723 [2020-10-28 17:33:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:45,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:33:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:33:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:45,729 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:33:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:33:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:45,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:45,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:33:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:45,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:33:45,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:33:45,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 17:33:45,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:45,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:45,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:33:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:33:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:33:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:45,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:45,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:33:45,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:45,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:33:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:45,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:45,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:45,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:45,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:33:45,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:45,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:46,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:33:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:33:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:33:46,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:46,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:33:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:33:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:46,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:33:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:46,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:46,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:46,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:46,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:46,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:33:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:33:46,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500238123] [2020-10-28 17:33:46,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:33:46,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:33:46,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271692419] [2020-10-28 17:33:46,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:46,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:46,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:46,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:46,080 INFO L87 Difference]: Start difference. First operand 1954 states and 2809 transitions. Second operand 9 states. [2020-10-28 17:33:46,400 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:33:46,758 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:33:47,222 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:33:47,850 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-28 17:33:48,899 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:33:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:51,967 INFO L93 Difference]: Finished difference Result 6837 states and 9979 transitions. [2020-10-28 17:33:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:33:51,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-28 17:33:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:52,003 INFO L225 Difference]: With dead ends: 6837 [2020-10-28 17:33:52,003 INFO L226 Difference]: Without dead ends: 5190 [2020-10-28 17:33:52,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:33:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2020-10-28 17:33:52,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 4846. [2020-10-28 17:33:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4846 states. [2020-10-28 17:33:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6971 transitions. [2020-10-28 17:33:52,446 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6971 transitions. Word has length 82 [2020-10-28 17:33:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:52,447 INFO L481 AbstractCegarLoop]: Abstraction has 4846 states and 6971 transitions. [2020-10-28 17:33:52,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6971 transitions. [2020-10-28 17:33:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 17:33:52,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:52,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:52,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:33:52,459 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1298902123, now seen corresponding path program 1 times [2020-10-28 17:33:52,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:52,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599530482] [2020-10-28 17:33:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-28 17:33:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:33:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:54,966 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:33:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:33:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:54,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:54,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:33:54,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:33:54,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:54,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:54,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:33:54,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:33:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:33:55,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:33:55,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:55,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:33:55,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:33:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:55,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:55,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:55,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:33:55,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:55,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:33:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:33:55,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:33:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:33:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:55,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:55,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:55,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:55,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:33:55,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:55,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:55,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:33:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:33:55,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:33:55,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:33:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:33:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:33:55,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:55,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:33:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:55,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:33:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:55,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:55,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:33:55,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:33:55,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:33:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:33:55,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:33:55,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:33:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:33:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:33:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:33:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:33:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:33:55,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599530482] [2020-10-28 17:33:55,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:33:55,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:33:55,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282029706] [2020-10-28 17:33:55,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:33:55,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:33:55,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:33:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:33:55,310 INFO L87 Difference]: Start difference. First operand 4846 states and 6971 transitions. Second operand 9 states. [2020-10-28 17:33:55,642 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:33:58,410 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:33:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:33:58,738 INFO L93 Difference]: Finished difference Result 12178 states and 17735 transitions. [2020-10-28 17:33:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:33:58,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-28 17:33:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:33:58,793 INFO L225 Difference]: With dead ends: 12178 [2020-10-28 17:33:58,793 INFO L226 Difference]: Without dead ends: 8535 [2020-10-28 17:33:58,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:33:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8535 states. [2020-10-28 17:33:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8535 to 7894. [2020-10-28 17:33:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7894 states. [2020-10-28 17:33:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7894 states to 7894 states and 11409 transitions. [2020-10-28 17:33:59,566 INFO L78 Accepts]: Start accepts. Automaton has 7894 states and 11409 transitions. Word has length 83 [2020-10-28 17:33:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:33:59,567 INFO L481 AbstractCegarLoop]: Abstraction has 7894 states and 11409 transitions. [2020-10-28 17:33:59,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:33:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7894 states and 11409 transitions. [2020-10-28 17:33:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:33:59,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:33:59,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:33:59,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:33:59,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:33:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:33:59,580 INFO L82 PathProgramCache]: Analyzing trace with hash -157535546, now seen corresponding path program 1 times [2020-10-28 17:33:59,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:33:59,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715345315] [2020-10-28 17:33:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:33:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:33:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:33:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4676 [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:34:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:34:04,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 17:34:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:04,681 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:34:04,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:34:04,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:34:04,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:34:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:34:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:34:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:04,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:04,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:34:04,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:04,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:34:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:34:04,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:34:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:34:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:34:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:34:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:05,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:34:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:05,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:34:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:05,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:05,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:05,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:05,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:34:05,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:05,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:05,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:34:05,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715345315] [2020-10-28 17:34:05,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:05,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:34:05,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178203261] [2020-10-28 17:34:05,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:34:05,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:05,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:34:05,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:34:05,098 INFO L87 Difference]: Start difference. First operand 7894 states and 11409 transitions. Second operand 9 states. [2020-10-28 17:34:05,419 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:34:05,840 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:34:06,228 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:34:07,218 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-28 17:34:07,862 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:34:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:12,047 INFO L93 Difference]: Finished difference Result 25942 states and 38078 transitions. [2020-10-28 17:34:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:34:12,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-28 17:34:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:12,144 INFO L225 Difference]: With dead ends: 25942 [2020-10-28 17:34:12,144 INFO L226 Difference]: Without dead ends: 18982 [2020-10-28 17:34:12,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:34:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18982 states. [2020-10-28 17:34:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18982 to 18147. [2020-10-28 17:34:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18147 states. [2020-10-28 17:34:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 26152 transitions. [2020-10-28 17:34:13,723 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 26152 transitions. Word has length 85 [2020-10-28 17:34:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:13,723 INFO L481 AbstractCegarLoop]: Abstraction has 18147 states and 26152 transitions. [2020-10-28 17:34:13,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:34:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 26152 transitions. [2020-10-28 17:34:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 17:34:13,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:13,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:34:13,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:34:13,749 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2095081029, now seen corresponding path program 1 times [2020-10-28 17:34:13,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:13,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969672223] [2020-10-28 17:34:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:14,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4768 [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:34:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:34:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 17:34:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:18,870 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:18,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:18,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:34:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:18,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:18,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:18,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:34:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:34:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:34:18,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:18,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:34:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:34:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:34:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:34:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:34:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:34:19,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:19,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:19,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:34:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:34:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:34:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:34:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:34:19,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:34:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:34:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:19,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:19,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:19,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:34:19,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:19,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:34:19,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969672223] [2020-10-28 17:34:19,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:19,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:34:19,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197289919] [2020-10-28 17:34:19,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:34:19,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:19,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:34:19,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:34:19,213 INFO L87 Difference]: Start difference. First operand 18147 states and 26152 transitions. Second operand 9 states. [2020-10-28 17:34:19,531 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:34:19,860 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:34:20,251 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:34:21,065 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-28 17:34:21,886 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:34:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:27,107 INFO L93 Difference]: Finished difference Result 56914 states and 83408 transitions. [2020-10-28 17:34:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:34:27,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-28 17:34:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:27,283 INFO L225 Difference]: With dead ends: 56914 [2020-10-28 17:34:27,283 INFO L226 Difference]: Without dead ends: 40361 [2020-10-28 17:34:27,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:34:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40361 states. [2020-10-28 17:34:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40361 to 39709. [2020-10-28 17:34:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39709 states. [2020-10-28 17:34:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39709 states to 39709 states and 56464 transitions. [2020-10-28 17:34:30,412 INFO L78 Accepts]: Start accepts. Automaton has 39709 states and 56464 transitions. Word has length 85 [2020-10-28 17:34:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:30,413 INFO L481 AbstractCegarLoop]: Abstraction has 39709 states and 56464 transitions. [2020-10-28 17:34:30,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:34:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 39709 states and 56464 transitions. [2020-10-28 17:34:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 17:34:30,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:30,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:34:30,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:34:30,477 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:30,477 INFO L82 PathProgramCache]: Analyzing trace with hash -251608099, now seen corresponding path program 1 times [2020-10-28 17:34:30,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:30,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845377926] [2020-10-28 17:34:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 17:34:32,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:34:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1704 [2020-10-28 17:34:32,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:34:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:34:32,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:34:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,643 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:34:32,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:34:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:34:32,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:34:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:34:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:34:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:34:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:34:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:32,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:34:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:34:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:34:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:34:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:32,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:32,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:34:32,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845377926] [2020-10-28 17:34:32,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:32,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:34:32,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687929264] [2020-10-28 17:34:32,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:34:32,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:32,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:34:32,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:34:32,885 INFO L87 Difference]: Start difference. First operand 39709 states and 56464 transitions. Second operand 9 states. [2020-10-28 17:34:33,208 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:34:35,826 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:34:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:39,422 INFO L93 Difference]: Finished difference Result 95212 states and 135718 transitions. [2020-10-28 17:34:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:34:39,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-28 17:34:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:39,635 INFO L225 Difference]: With dead ends: 95212 [2020-10-28 17:34:39,635 INFO L226 Difference]: Without dead ends: 60230 [2020-10-28 17:34:39,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:34:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60230 states. [2020-10-28 17:34:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60230 to 56803. [2020-10-28 17:34:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56803 states. [2020-10-28 17:34:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56803 states to 56803 states and 77371 transitions. [2020-10-28 17:34:44,299 INFO L78 Accepts]: Start accepts. Automaton has 56803 states and 77371 transitions. Word has length 86 [2020-10-28 17:34:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:34:44,300 INFO L481 AbstractCegarLoop]: Abstraction has 56803 states and 77371 transitions. [2020-10-28 17:34:44,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:34:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 56803 states and 77371 transitions. [2020-10-28 17:34:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:34:44,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:34:44,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:34:44,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:34:44,357 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:34:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:34:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1705410826, now seen corresponding path program 1 times [2020-10-28 17:34:44,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:34:44,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953915991] [2020-10-28 17:34:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:34:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:44,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:34:49,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:34:49,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,701 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:34:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:34:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:34:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:34:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:49,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 17:34:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 17:34:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:34:49,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:34:49,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:34:49,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:34:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 17:34:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:34:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:34:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:34:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:34:49,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:34:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:34:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:34:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:34:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:34:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:34:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:34:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:34:49,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:34:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:34:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:34:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:34:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:34:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:34:49,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953915991] [2020-10-28 17:34:49,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:34:49,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:34:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963534290] [2020-10-28 17:34:49,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:34:49,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:34:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:34:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:34:49,986 INFO L87 Difference]: Start difference. First operand 56803 states and 77371 transitions. Second operand 8 states. [2020-10-28 17:34:50,306 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:34:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:34:56,316 INFO L93 Difference]: Finished difference Result 94701 states and 129405 transitions. [2020-10-28 17:34:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:34:56,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-28 17:34:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:34:56,750 INFO L225 Difference]: With dead ends: 94701 [2020-10-28 17:34:56,751 INFO L226 Difference]: Without dead ends: 65835 [2020-10-28 17:34:56,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:34:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65835 states. [2020-10-28 17:35:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65835 to 64696. [2020-10-28 17:35:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64696 states. [2020-10-28 17:35:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64696 states to 64696 states and 87568 transitions. [2020-10-28 17:35:02,192 INFO L78 Accepts]: Start accepts. Automaton has 64696 states and 87568 transitions. Word has length 89 [2020-10-28 17:35:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:02,193 INFO L481 AbstractCegarLoop]: Abstraction has 64696 states and 87568 transitions. [2020-10-28 17:35:02,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:35:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 64696 states and 87568 transitions. [2020-10-28 17:35:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:35:02,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:02,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:35:02,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:35:02,215 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:02,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:02,216 INFO L82 PathProgramCache]: Analyzing trace with hash 623346883, now seen corresponding path program 1 times [2020-10-28 17:35:02,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:02,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795846354] [2020-10-28 17:35:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:02,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 17:35:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:35:03,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,372 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:03,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:03,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:35:03,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:35:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:03,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:35:03,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 17:35:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:35:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:03,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:35:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:35:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:03,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:35:03,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:35:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:35:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:03,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:03,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:35:03,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:35:03,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:03,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:35:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:03,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:03,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:03,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:03,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:03,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:03,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:35:03,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795846354] [2020-10-28 17:35:03,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:03,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:35:03,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836927764] [2020-10-28 17:35:03,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:35:03,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:03,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:35:03,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:35:03,607 INFO L87 Difference]: Start difference. First operand 64696 states and 87568 transitions. Second operand 8 states. [2020-10-28 17:35:03,921 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:11,684 INFO L93 Difference]: Finished difference Result 112102 states and 154556 transitions. [2020-10-28 17:35:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:35:11,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-28 17:35:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:12,091 INFO L225 Difference]: With dead ends: 112102 [2020-10-28 17:35:12,091 INFO L226 Difference]: Without dead ends: 80515 [2020-10-28 17:35:12,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:35:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2020-10-28 17:35:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 79192. [2020-10-28 17:35:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79192 states. [2020-10-28 17:35:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79192 states to 79192 states and 107803 transitions. [2020-10-28 17:35:18,707 INFO L78 Accepts]: Start accepts. Automaton has 79192 states and 107803 transitions. Word has length 89 [2020-10-28 17:35:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:18,707 INFO L481 AbstractCegarLoop]: Abstraction has 79192 states and 107803 transitions. [2020-10-28 17:35:18,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:35:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 79192 states and 107803 transitions. [2020-10-28 17:35:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 17:35:18,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:18,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:35:18,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:35:18,722 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:18,723 INFO L82 PathProgramCache]: Analyzing trace with hash 558298819, now seen corresponding path program 1 times [2020-10-28 17:35:18,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:18,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997258350] [2020-10-28 17:35:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:35:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,714 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 17:35:19,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:35:19,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 17:35:19,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 17:35:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:19,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:35:19,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 17:35:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:35:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:35:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:35:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:35:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:19,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:19,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:35:19,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:19,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:35:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:35:19,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997258350] [2020-10-28 17:35:19,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:19,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 17:35:19,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46496621] [2020-10-28 17:35:19,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:35:19,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:35:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:35:19,933 INFO L87 Difference]: Start difference. First operand 79192 states and 107803 transitions. Second operand 8 states. [2020-10-28 17:35:20,250 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:22,472 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 17:35:22,878 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 17:35:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:35:30,220 INFO L93 Difference]: Finished difference Result 144666 states and 198957 transitions. [2020-10-28 17:35:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:35:30,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-28 17:35:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:35:30,924 INFO L225 Difference]: With dead ends: 144666 [2020-10-28 17:35:30,925 INFO L226 Difference]: Without dead ends: 102407 [2020-10-28 17:35:31,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 17:35:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102407 states. [2020-10-28 17:35:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102407 to 101108. [2020-10-28 17:35:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101108 states. [2020-10-28 17:35:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101108 states to 101108 states and 138169 transitions. [2020-10-28 17:35:39,319 INFO L78 Accepts]: Start accepts. Automaton has 101108 states and 138169 transitions. Word has length 89 [2020-10-28 17:35:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:35:39,319 INFO L481 AbstractCegarLoop]: Abstraction has 101108 states and 138169 transitions. [2020-10-28 17:35:39,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:35:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 101108 states and 138169 transitions. [2020-10-28 17:35:39,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 17:35:39,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:35:39,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:35:39,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:35:39,330 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:35:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:35:39,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1730161285, now seen corresponding path program 1 times [2020-10-28 17:35:39,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:35:39,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014451109] [2020-10-28 17:35:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:35:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 17:35:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,205 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 17:35:40,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:35:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:35:40,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:35:40,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:35:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:40,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:35:40,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:35:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 17:35:40,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:35:40,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:35:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 17:35:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:35:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:35:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:35:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:35:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:35:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:35:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:35:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:35:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:35:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:35:40,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:35:40,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:35:40,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:35:40,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:35:40,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:35:40,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:35:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:35:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:35:40,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:35:40,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:35:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:35:40,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014451109] [2020-10-28 17:35:40,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:35:40,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:35:40,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149101308] [2020-10-28 17:35:40,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:35:40,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:35:40,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:35:40,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:35:40,584 INFO L87 Difference]: Start difference. First operand 101108 states and 138169 transitions. Second operand 13 states. [2020-10-28 17:35:41,039 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 17:35:41,586 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 17:35:41,867 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:35:45,353 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 17:35:45,711 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 17:35:46,016 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 17:35:49,668 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 17:35:56,364 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70