/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=DEEPEST --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.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:49:21,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:49:21,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:49:21,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:49:21,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:49:21,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:49:21,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:49:21,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:49:21,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:49:21,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:49:21,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:49:21,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:49:21,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:49:21,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:49:21,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:49:21,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:49:21,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:49:21,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:49:21,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:49:21,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:49:21,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:49:21,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:49:21,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:49:21,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:49:21,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:49:21,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:49:21,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:49:21,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:49:21,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:49:21,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:49:21,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:49:21,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:49:21,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:49:21,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:49:21,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:49:21,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:49:21,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:49:21,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:49:21,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:49:21,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:49:21,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:49:21,509 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 [2020-10-27 22:49:21,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:49:21,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:49:21,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:49:21,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:49:21,586 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:49:21,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:49:21,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:49:21,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:49:21,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:49:21,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:49:21,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:49:21,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:49:21,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:49:21,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:49:21,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:49:21,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:49:21,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:49:21,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:49:21,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:49:21,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:49:21,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:49:21,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:49:21,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:49:21,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:49:21,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:49:21,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:49:21,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:49:21,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:49:21,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:49:21,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:49:22,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:49:22,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:49:22,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:49:22,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:49:22,128 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:49:22,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 22:49:22,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a6962e26/8da575a510ae4d61851dc604434405e5/FLAGb68760320 [2020-10-27 22:49:23,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:49:23,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 22:49:23,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a6962e26/8da575a510ae4d61851dc604434405e5/FLAGb68760320 [2020-10-27 22:49:23,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a6962e26/8da575a510ae4d61851dc604434405e5 [2020-10-27 22:49:23,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:49:23,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:49:23,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:49:23,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:49:23,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:49:23,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e99fc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23, skipping insertion in model container [2020-10-27 22:49:23,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:49:23,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:49:23,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:49:23,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:49:23,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:49:23,772 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:49:23,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23 WrapperNode [2020-10-27 22:49:23,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:49:23,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:49:23,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:49:23,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:49:23,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (1/1) ... [2020-10-27 22:49:23,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:49:23,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:49:23,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:49:23,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:49:23,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (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 [2020-10-27 22:49:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:49:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:49:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:49:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 22:49:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:49:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:49:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:49:23,994 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 22:49:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:49:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:49:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:49:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:49:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:49:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:49:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:49:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:49:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:49:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:49:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:49:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 22:49:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:49:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:49:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:49:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:49:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:49:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 22:49:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:49:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:49:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:49:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:49:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:49:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:49:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:49:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:49:23,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:49:25,365 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:49:25,366 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:49:25,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:49:25 BoogieIcfgContainer [2020-10-27 22:49:25,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:49:25,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:49:25,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:49:25,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:49:25,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:49:23" (1/3) ... [2020-10-27 22:49:25,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20fcce40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:49:25, skipping insertion in model container [2020-10-27 22:49:25,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:49:23" (2/3) ... [2020-10-27 22:49:25,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20fcce40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:49:25, skipping insertion in model container [2020-10-27 22:49:25,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:49:25" (3/3) ... [2020-10-27 22:49:25,380 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 22:49:25,394 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:49:25,401 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:49:25,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:49:25,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:49:25,452 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:49:25,452 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:49:25,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:49:25,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:49:25,453 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:49:25,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:49:25,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:49:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-10-27 22:49:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 22:49:25,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:25,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:25,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1744427751, now seen corresponding path program 1 times [2020-10-27 22:49:25,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:25,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220649823] [2020-10-27 22:49:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:26,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 22:49:26,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-27 22:49:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 22:49:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:49:27,312 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:49:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:49:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:49:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 22:49:27,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:49:27,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:49:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:49:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:49:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:49:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:49:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:27,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:49:27,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:49:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:27,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:49:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:49:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:27,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:49:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:49:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:49:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:49:27,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 22:49:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:27,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:27,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:27,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:27,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220649823] [2020-10-27 22:49:27,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:27,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 22:49:27,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973777162] [2020-10-27 22:49:27,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:49:27,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:27,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:49:27,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:49:27,947 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 7 states. [2020-10-27 22:49:28,996 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:29,434 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:29,874 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:30,406 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:30,911 INFO L93 Difference]: Finished difference Result 500 states and 839 transitions. [2020-10-27 22:49:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:49:30,913 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-27 22:49:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:30,929 INFO L225 Difference]: With dead ends: 500 [2020-10-27 22:49:30,930 INFO L226 Difference]: Without dead ends: 358 [2020-10-27 22:49:30,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:49:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-27 22:49:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 330. [2020-10-27 22:49:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 22:49:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 569 transitions. [2020-10-27 22:49:31,047 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 569 transitions. Word has length 105 [2020-10-27 22:49:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:31,048 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 569 transitions. [2020-10-27 22:49:31,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:49:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 569 transitions. [2020-10-27 22:49:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 22:49:31,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:31,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:31,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:49:31,053 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:31,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:31,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1496281257, now seen corresponding path program 1 times [2020-10-27 22:49:31,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:31,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450557601] [2020-10-27 22:49:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:32,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:32,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 22:49:32,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:32,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-27 22:49:32,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:49:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 22:49:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:49:32,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-27 22:49:33,307 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:49:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:33,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:33,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:49:33,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:33,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:33,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:33,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:49:33,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:33,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-27 22:49:33,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:33,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:49:33,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:33,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 22:49:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:49:33,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:49:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:49:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:49:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:33,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:33,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:33,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:33,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 22:49:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:33,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:33,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 22:49:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:34,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:34,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:49:34,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:34,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:49:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:34,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:34,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:34,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:34,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 22:49:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:49:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:34,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450557601] [2020-10-27 22:49:34,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:34,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:49:34,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144633219] [2020-10-27 22:49:34,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:49:34,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:34,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:49:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:49:34,155 INFO L87 Difference]: Start difference. First operand 330 states and 569 transitions. Second operand 13 states. [2020-10-27 22:49:37,029 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:49:37,727 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:49:38,457 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 22:49:39,040 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 22:49:39,811 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:40,263 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:40,749 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:41,248 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:42,080 INFO L93 Difference]: Finished difference Result 500 states and 839 transitions. [2020-10-27 22:49:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:49:42,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 105 [2020-10-27 22:49:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:42,086 INFO L225 Difference]: With dead ends: 500 [2020-10-27 22:49:42,086 INFO L226 Difference]: Without dead ends: 368 [2020-10-27 22:49:42,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:49:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-27 22:49:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 330. [2020-10-27 22:49:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-27 22:49:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 527 transitions. [2020-10-27 22:49:42,167 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 527 transitions. Word has length 105 [2020-10-27 22:49:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:42,169 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 527 transitions. [2020-10-27 22:49:42,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:49:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 527 transitions. [2020-10-27 22:49:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 22:49:42,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:42,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:42,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:49:42,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:42,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1781112204, now seen corresponding path program 1 times [2020-10-27 22:49:42,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:42,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027911323] [2020-10-27 22:49:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:47,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 22:49:47,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:49:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 22:49:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 22:49:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 22:49:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:49:47,922 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:49:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:49:47,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:49:48,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 22:49:48,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:48,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 22:49:48,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:49:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:49:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:49:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:48,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:48,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:49:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:48,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:49:48,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:49:48,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:49:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:48,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:49:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:49:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:49:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:49:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 22:49:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:48,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:48,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:49:48,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027911323] [2020-10-27 22:49:48,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:48,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:49:48,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635079107] [2020-10-27 22:49:48,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:49:48,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:48,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:49:48,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:49:48,465 INFO L87 Difference]: Start difference. First operand 330 states and 527 transitions. Second operand 10 states. [2020-10-27 22:49:49,070 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:49:51,112 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:49:51,524 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:49:51,955 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:49:52,450 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:52,753 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:49:53,645 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:53,989 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:54,324 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:49:55,094 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:49:55,260 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:49:55,458 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:49:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:55,509 INFO L93 Difference]: Finished difference Result 634 states and 1011 transitions. [2020-10-27 22:49:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:49:55,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-10-27 22:49:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:55,517 INFO L225 Difference]: With dead ends: 634 [2020-10-27 22:49:55,517 INFO L226 Difference]: Without dead ends: 508 [2020-10-27 22:49:55,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:49:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-27 22:49:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 446. [2020-10-27 22:49:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-27 22:49:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 713 transitions. [2020-10-27 22:49:55,607 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 713 transitions. Word has length 146 [2020-10-27 22:49:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:55,607 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 713 transitions. [2020-10-27 22:49:55,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:49:55,607 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 713 transitions. [2020-10-27 22:49:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 22:49:55,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:55,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:55,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:49:55,614 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:55,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1184615978, now seen corresponding path program 1 times [2020-10-27 22:49:55,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:55,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361156097] [2020-10-27 22:49:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 22:50:00,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 22:50:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,345 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 22:50:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:01,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 22:50:01,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 22:50:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:01,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:01,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:01,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:50:01,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:01,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:01,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:01,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:50:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:01,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:50:01,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:50:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:01,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:50:01,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:01,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 22:50:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:01,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:01,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:01,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:01,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:01,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:50:01,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361156097] [2020-10-27 22:50:01,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:01,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:50:01,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315438886] [2020-10-27 22:50:01,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:50:01,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:50:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:50:01,963 INFO L87 Difference]: Start difference. First operand 446 states and 713 transitions. Second operand 10 states. [2020-10-27 22:50:02,533 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:04,543 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:04,924 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:05,312 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:05,613 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:05,920 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:06,079 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:07,157 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:07,472 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:08,220 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:08,397 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:08,572 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:50:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:08,644 INFO L93 Difference]: Finished difference Result 1034 states and 1647 transitions. [2020-10-27 22:50:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:50:08,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-27 22:50:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:08,652 INFO L225 Difference]: With dead ends: 1034 [2020-10-27 22:50:08,652 INFO L226 Difference]: Without dead ends: 792 [2020-10-27 22:50:08,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:50:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-27 22:50:08,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 671. [2020-10-27 22:50:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-27 22:50:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1070 transitions. [2020-10-27 22:50:08,729 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1070 transitions. Word has length 149 [2020-10-27 22:50:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:08,730 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 1070 transitions. [2020-10-27 22:50:08,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:50:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1070 transitions. [2020-10-27 22:50:08,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 22:50:08,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:08,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:50:08,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:50:08,734 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:08,734 INFO L82 PathProgramCache]: Analyzing trace with hash 966460556, now seen corresponding path program 1 times [2020-10-27 22:50:08,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:08,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360521057] [2020-10-27 22:50:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:08,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:09,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:13,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 22:50:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:50:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 22:50:13,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 22:50:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:50:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,438 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:50:14,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:14,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 22:50:14,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 22:50:14,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:50:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:14,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:50:14,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:50:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:50:14,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 22:50:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:50:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:14,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 22:50:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:14,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:14,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:14,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:14,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:14,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:14,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:14,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:50:14,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360521057] [2020-10-27 22:50:14,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:14,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:50:14,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596493756] [2020-10-27 22:50:14,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:50:14,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:14,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:50:14,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:50:14,975 INFO L87 Difference]: Start difference. First operand 671 states and 1070 transitions. Second operand 9 states. [2020-10-27 22:50:15,608 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:50:17,948 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:50:18,402 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:50:18,982 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:19,181 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:19,425 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:20,154 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:20,468 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:20,824 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:50:21,135 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:50:21,335 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:50:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:21,890 INFO L93 Difference]: Finished difference Result 1334 states and 2132 transitions. [2020-10-27 22:50:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:50:21,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-10-27 22:50:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:21,899 INFO L225 Difference]: With dead ends: 1334 [2020-10-27 22:50:21,899 INFO L226 Difference]: Without dead ends: 1088 [2020-10-27 22:50:21,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:50:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-10-27 22:50:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 917. [2020-10-27 22:50:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-10-27 22:50:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1467 transitions. [2020-10-27 22:50:22,007 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1467 transitions. Word has length 152 [2020-10-27 22:50:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:22,007 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1467 transitions. [2020-10-27 22:50:22,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:50:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1467 transitions. [2020-10-27 22:50:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 22:50:22,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:22,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:50:22,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:50:22,011 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:22,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1246117464, now seen corresponding path program 1 times [2020-10-27 22:50:22,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:22,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540299313] [2020-10-27 22:50:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:25,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:27,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 22:50:27,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:50:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 22:50:27,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 22:50:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 22:50:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:27,778 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:50:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:27,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:27,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:27,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:27,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:27,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 22:50:27,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:27,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:50:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:28,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:28,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:28,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:28,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:28,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:28,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:28,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:50:28,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:28,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 22:50:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:28,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:28,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 22:50:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:28,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 22:50:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:28,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:28,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:28,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:28,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:28,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:28,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:50:28,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540299313] [2020-10-27 22:50:28,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:28,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:50:28,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838410750] [2020-10-27 22:50:28,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:50:28,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:50:28,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:50:28,355 INFO L87 Difference]: Start difference. First operand 917 states and 1467 transitions. Second operand 10 states. [2020-10-27 22:50:28,987 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:31,121 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:31,515 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:31,866 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:50:32,266 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:32,420 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:32,807 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:32,959 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:34,233 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:34,964 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:50:35,124 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:50:35,358 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:50:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:35,685 INFO L93 Difference]: Finished difference Result 2548 states and 4042 transitions. [2020-10-27 22:50:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:50:35,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-10-27 22:50:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:35,701 INFO L225 Difference]: With dead ends: 2548 [2020-10-27 22:50:35,701 INFO L226 Difference]: Without dead ends: 1881 [2020-10-27 22:50:35,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:50:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-10-27 22:50:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1538. [2020-10-27 22:50:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-10-27 22:50:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2438 transitions. [2020-10-27 22:50:35,866 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2438 transitions. Word has length 152 [2020-10-27 22:50:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:35,867 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2438 transitions. [2020-10-27 22:50:35,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:50:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2438 transitions. [2020-10-27 22:50:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 22:50:35,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:35,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:50:35,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:50:35,870 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 524989468, now seen corresponding path program 1 times [2020-10-27 22:50:35,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:35,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539204759] [2020-10-27 22:50:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:40,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:40,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 22:50:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:50:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:50:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 22:50:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:50:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,686 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:41,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:50:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:41,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 22:50:41,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:41,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 22:50:41,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:41,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:41,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:50:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:50:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:41,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:42,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:42,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:42,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:42,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 22:50:42,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:42,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:50:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 22:50:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:42,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:42,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:42,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:50:42,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 22:50:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:42,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 22:50:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:42,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:50:42,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539204759] [2020-10-27 22:50:42,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:42,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:50:42,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474259609] [2020-10-27 22:50:42,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:50:42,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:50:42,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:50:42,231 INFO L87 Difference]: Start difference. First operand 1538 states and 2438 transitions. Second operand 9 states. [2020-10-27 22:50:42,883 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:50:45,120 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:50:45,667 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:45,813 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:46,120 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:46,406 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:47,174 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:47,493 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:50:47,741 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:50:47,949 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:50:48,471 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:50:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:50:49,143 INFO L93 Difference]: Finished difference Result 3176 states and 5040 transitions. [2020-10-27 22:50:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:50:49,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2020-10-27 22:50:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:50:49,170 INFO L225 Difference]: With dead ends: 3176 [2020-10-27 22:50:49,171 INFO L226 Difference]: Without dead ends: 2489 [2020-10-27 22:50:49,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:50:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-10-27 22:50:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2052. [2020-10-27 22:50:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2020-10-27 22:50:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3250 transitions. [2020-10-27 22:50:49,416 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3250 transitions. Word has length 155 [2020-10-27 22:50:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:50:49,417 INFO L481 AbstractCegarLoop]: Abstraction has 2052 states and 3250 transitions. [2020-10-27 22:50:49,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:50:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3250 transitions. [2020-10-27 22:50:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 22:50:49,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:50:49,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:50:49,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:50:49,419 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:50:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:50:49,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1433990784, now seen corresponding path program 1 times [2020-10-27 22:50:49,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:50:49,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15734150] [2020-10-27 22:50:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:50:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:54,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:54,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 22:50:54,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:50:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:50:54,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 22:50:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:50:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,121 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:50:55,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:50:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:50:55,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:50:55,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:55,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:50:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:50:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 22:50:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 22:50:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:50:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:50:55,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:55,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:50:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:50:55,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:50:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:50:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:55,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:50:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:50:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:50:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:50:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 22:50:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 22:50:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 22:50:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:50:55,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:50:55,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:50:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 22:50:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:50:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:50:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:50:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:50:55,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:50:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:50:55,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:50:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:50:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:50:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:50:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:50:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:50:55,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15734150] [2020-10-27 22:50:55,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:50:55,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:50:55,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989033603] [2020-10-27 22:50:55,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:50:55,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:50:55,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:50:55,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:50:55,578 INFO L87 Difference]: Start difference. First operand 2052 states and 3250 transitions. Second operand 10 states. [2020-10-27 22:50:56,158 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:50:58,079 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:58,380 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:50:58,790 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:58,952 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:59,366 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:50:59,532 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:50:59,899 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:00,046 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:51:01,175 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:51:01,659 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:01,851 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:02,647 INFO L93 Difference]: Finished difference Result 6564 states and 10324 transitions. [2020-10-27 22:51:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:51:02,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 155 [2020-10-27 22:51:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:02,671 INFO L225 Difference]: With dead ends: 6564 [2020-10-27 22:51:02,672 INFO L226 Difference]: Without dead ends: 4738 [2020-10-27 22:51:02,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:51:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2020-10-27 22:51:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 3766. [2020-10-27 22:51:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3766 states. [2020-10-27 22:51:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5774 transitions. [2020-10-27 22:51:03,088 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5774 transitions. Word has length 155 [2020-10-27 22:51:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:03,088 INFO L481 AbstractCegarLoop]: Abstraction has 3766 states and 5774 transitions. [2020-10-27 22:51:03,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:51:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5774 transitions. [2020-10-27 22:51:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 22:51:03,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:03,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:51:03,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:51:03,091 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1858678298, now seen corresponding path program 1 times [2020-10-27 22:51:03,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:03,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329488682] [2020-10-27 22:51:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:08,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:51:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:08,785 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:08,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:08,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:08,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 22:51:08,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 22:51:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:08,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:08,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:08,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:08,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:08,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:08,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:09,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:51:09,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:09,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:51:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:09,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:09,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:51:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:09,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:51:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:51:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:51:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:51:09,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329488682] [2020-10-27 22:51:09,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:09,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:51:09,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393592286] [2020-10-27 22:51:09,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:51:09,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:09,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:51:09,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:51:09,235 INFO L87 Difference]: Start difference. First operand 3766 states and 5774 transitions. Second operand 9 states. [2020-10-27 22:51:09,860 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:51:12,284 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:12,496 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:12,876 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:13,236 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:13,581 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:14,388 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:51:14,669 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:51:14,910 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:15,494 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:16,037 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:17,165 INFO L93 Difference]: Finished difference Result 8274 states and 12814 transitions. [2020-10-27 22:51:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:51:17,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-27 22:51:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:17,199 INFO L225 Difference]: With dead ends: 8274 [2020-10-27 22:51:17,199 INFO L226 Difference]: Without dead ends: 6350 [2020-10-27 22:51:17,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:51:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2020-10-27 22:51:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 5199. [2020-10-27 22:51:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2020-10-27 22:51:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 7977 transitions. [2020-10-27 22:51:17,786 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 7977 transitions. Word has length 158 [2020-10-27 22:51:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:17,787 INFO L481 AbstractCegarLoop]: Abstraction has 5199 states and 7977 transitions. [2020-10-27 22:51:17,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:51:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 7977 transitions. [2020-10-27 22:51:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 22:51:17,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:17,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:51:17,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:51:17,790 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1472897994, now seen corresponding path program 1 times [2020-10-27 22:51:17,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:17,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982173885] [2020-10-27 22:51:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:17,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:22,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:22,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 22:51:22,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:23,444 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:23,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:23,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:23,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:51:23,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:23,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:23,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:23,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:23,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:23,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 22:51:23,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:51:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 22:51:23,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:23,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:23,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:23,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:51:23,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:23,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:51:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:23,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:51:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:23,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:23,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:23,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:51:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:23,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:51:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:24,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:24,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:24,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:51:24,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:24,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:24,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:51:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:24,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:24,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:51:24,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:24,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:51:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:24,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:51:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:51:24,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982173885] [2020-10-27 22:51:24,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:24,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 22:51:24,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144038108] [2020-10-27 22:51:24,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:51:24,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:24,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:51:24,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:51:24,219 INFO L87 Difference]: Start difference. First operand 5199 states and 7977 transitions. Second operand 16 states. [2020-10-27 22:51:24,874 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:51:27,561 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:51:28,139 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:51:28,745 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 22:51:29,128 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:29,519 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:29,843 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:30,157 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:30,509 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:31,304 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 22:51:32,037 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 22:51:32,282 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:32,682 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:32,867 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:51:33,319 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 22:51:33,925 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:51:34,107 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:34,306 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:34,505 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:35,066 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:35,302 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:51:35,548 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:36,153 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 22:51:36,789 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-27 22:51:37,001 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:37,169 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:37,377 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:37,556 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:37,756 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:38,450 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:38,730 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:39,013 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:39,184 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:40,300 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2020-10-27 22:51:40,500 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 22:51:40,713 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:40,883 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:41,041 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:41,231 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:51:41,433 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:41,600 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:41,780 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:43,104 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:51:43,286 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:43,457 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:51:45,348 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:51:45,526 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:45,772 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:45,944 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:46,138 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:46,424 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:51:47,046 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:51:47,288 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:47,486 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:51:47,752 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:51:48,373 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:51:48,601 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:51:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:51:50,567 INFO L93 Difference]: Finished difference Result 40523 states and 62906 transitions. [2020-10-27 22:51:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-27 22:51:50,568 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2020-10-27 22:51:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:51:50,745 INFO L225 Difference]: With dead ends: 40523 [2020-10-27 22:51:50,746 INFO L226 Difference]: Without dead ends: 35561 [2020-10-27 22:51:50,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=1166, Invalid=4534, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 22:51:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35561 states. [2020-10-27 22:51:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35561 to 28863. [2020-10-27 22:51:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28863 states. [2020-10-27 22:51:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28863 states to 28863 states and 44371 transitions. [2020-10-27 22:51:53,638 INFO L78 Accepts]: Start accepts. Automaton has 28863 states and 44371 transitions. Word has length 158 [2020-10-27 22:51:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:51:53,639 INFO L481 AbstractCegarLoop]: Abstraction has 28863 states and 44371 transitions. [2020-10-27 22:51:53,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:51:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 28863 states and 44371 transitions. [2020-10-27 22:51:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 22:51:53,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:51:53,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:51:53,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:51:53,642 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:51:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:51:53,642 INFO L82 PathProgramCache]: Analyzing trace with hash -798704036, now seen corresponding path program 1 times [2020-10-27 22:51:53,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:51:53,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973960975] [2020-10-27 22:51:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:51:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:58,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:58,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 22:51:58,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:51:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 22:51:58,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:58,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:51:58,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 22:51:58,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 22:51:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,365 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:51:59,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:51:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:51:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:51:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:51:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:51:59,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-27 22:51:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:51:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 22:51:59,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:51:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:59,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:51:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:51:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:51:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:51:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:59,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:51:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:59,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:51:59,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:51:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:51:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:51:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 22:51:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:51:59,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:51:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:51:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:51:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:51:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:51:59,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973960975] [2020-10-27 22:51:59,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:51:59,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:51:59,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292818965] [2020-10-27 22:51:59,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:51:59,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:51:59,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:51:59,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:51:59,841 INFO L87 Difference]: Start difference. First operand 28863 states and 44371 transitions. Second operand 11 states. [2020-10-27 22:52:00,461 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:52:02,907 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-27 22:52:03,241 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:52:03,570 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:03,838 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:04,092 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:04,735 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:04,884 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:05,077 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:05,233 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:05,793 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:05,949 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:06,550 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:06,705 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:52:07,699 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-27 22:52:08,277 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-27 22:52:09,369 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:52:09,548 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 22:52:09,825 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:52:10,089 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:52:10,597 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:10,807 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:11,540 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:11,753 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:12,482 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:52:12,731 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:15,269 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:52:16,554 INFO L93 Difference]: Finished difference Result 106706 states and 164899 transitions. [2020-10-27 22:52:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 22:52:16,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2020-10-27 22:52:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:52:17,076 INFO L225 Difference]: With dead ends: 106706 [2020-10-27 22:52:17,076 INFO L226 Difference]: Without dead ends: 78080 [2020-10-27 22:52:17,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 22:52:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78080 states. [2020-10-27 22:52:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78080 to 63514. [2020-10-27 22:52:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63514 states. [2020-10-27 22:52:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63514 states to 63514 states and 97368 transitions. [2020-10-27 22:52:22,494 INFO L78 Accepts]: Start accepts. Automaton has 63514 states and 97368 transitions. Word has length 159 [2020-10-27 22:52:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:52:22,494 INFO L481 AbstractCegarLoop]: Abstraction has 63514 states and 97368 transitions. [2020-10-27 22:52:22,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:52:22,494 INFO L276 IsEmpty]: Start isEmpty. Operand 63514 states and 97368 transitions. [2020-10-27 22:52:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 22:52:22,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:52:22,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:52:22,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:52:22,497 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:52:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:52:22,498 INFO L82 PathProgramCache]: Analyzing trace with hash -479326618, now seen corresponding path program 1 times [2020-10-27 22:52:22,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:52:22,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694707181] [2020-10-27 22:52:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:52:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 22:52:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 22:52:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,181 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-27 22:52:28,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:52:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:52:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:52:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:52:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:52:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:52:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 22:52:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 22:52:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:52:28,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:52:28,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:52:28,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 22:52:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:52:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 22:52:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:52:28,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 22:52:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:52:28,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 22:52:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 22:52:28,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:52:28,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:52:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:52:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:52:28,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 22:52:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:52:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:52:28,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:52:28,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:52:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:52:28,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694707181] [2020-10-27 22:52:28,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:52:28,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:52:28,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338218862] [2020-10-27 22:52:28,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:52:28,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:52:28,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:52:28,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:52:28,561 INFO L87 Difference]: Start difference. First operand 63514 states and 97368 transitions. Second operand 9 states. [2020-10-27 22:52:29,152 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-27 22:52:31,309 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:31,663 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:31,969 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:52:32,321 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 22:52:32,481 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:32,905 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:33,276 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:33,645 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:52:34,068 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:52:34,354 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:52:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:52:40,917 INFO L93 Difference]: Finished difference Result 151181 states and 233170 transitions. [2020-10-27 22:52:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:52:40,918 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2020-10-27 22:52:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:52:41,569 INFO L225 Difference]: With dead ends: 151181 [2020-10-27 22:52:41,569 INFO L226 Difference]: Without dead ends: 112149 [2020-10-27 22:52:41,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:52:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112149 states.