/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:55:42,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:55:42,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:55:42,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:55:42,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:55:42,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:55:42,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:55:42,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:55:42,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:55:42,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:55:42,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:55:42,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:55:42,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:55:42,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:55:42,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:55:42,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:55:42,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:55:42,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:55:42,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:55:42,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:55:42,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:55:42,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:55:42,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:55:42,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:55:42,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:55:42,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:55:42,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:55:42,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:55:42,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:55:42,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:55:42,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:55:42,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:55:42,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:55:42,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:55:42,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:55:42,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:55:42,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:55:42,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:55:42,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:55:42,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:55:42,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:55:42,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:55:42,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:55:42,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:55:42,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:55:42,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:55:42,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:55:42,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:55:42,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:55:42,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:55:42,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:55:42,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:55:42,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:55:42,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:55:42,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:55:42,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:55:42,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:55:42,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:55:42,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:55:42,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:55:42,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:55:42,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:55:42,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:55:42,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:55:42,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:55:42,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:55:42,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:55:42,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:55:42,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:55:42,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:55:42,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:55:42,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:55:42,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:55:42,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:55:42,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:55:42,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:55:42,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:55:42,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:55:42,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7afd62beb/1e79e16f81224a0fa32a37dd4fd9e381/FLAG1cb219416 [2020-10-29 13:55:43,437 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:55:43,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:55:43,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7afd62beb/1e79e16f81224a0fa32a37dd4fd9e381/FLAG1cb219416 [2020-10-29 13:55:43,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7afd62beb/1e79e16f81224a0fa32a37dd4fd9e381 [2020-10-29 13:55:43,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:55:43,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:55:43,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:55:43,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:55:43,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:55:43,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:55:43" (1/1) ... [2020-10-29 13:55:43,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66932ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:43, skipping insertion in model container [2020-10-29 13:55:43,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:55:43" (1/1) ... [2020-10-29 13:55:43,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:55:43,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:55:44,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:55:44,311 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:55:44,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:55:44,598 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:55:44,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44 WrapperNode [2020-10-29 13:55:44,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:55:44,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:55:44,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:55:44,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:55:44,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... [2020-10-29 13:55:44,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:55:44,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:55:44,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:55:44,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:55:44,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:55:44,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:55:44,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:55:44,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:55:44,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:55:44,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:55:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:55:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:55:44,824 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:55:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:55:44,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:55:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:55:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:55:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:55:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:55:44,826 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:55:44,827 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:55:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:55:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:55:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:55:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:55:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:55:44,828 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:55:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:55:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:55:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:55:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:55:44,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:55:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:55:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:55:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:55:44,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:55:46,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:55:46,094 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:55:46,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:55:46 BoogieIcfgContainer [2020-10-29 13:55:46,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:55:46,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:55:46,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:55:46,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:55:46,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:55:43" (1/3) ... [2020-10-29 13:55:46,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a491ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:55:46, skipping insertion in model container [2020-10-29 13:55:46,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:55:44" (2/3) ... [2020-10-29 13:55:46,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a491ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:55:46, skipping insertion in model container [2020-10-29 13:55:46,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:55:46" (3/3) ... [2020-10-29 13:55:46,107 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:55:46,119 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:55:46,125 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:55:46,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:55:46,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:55:46,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:55:46,170 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:55:46,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:55:46,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:55:46,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:55:46,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:55:46,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:55:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 13:55:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:55:46,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:46,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:46,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash -819651216, now seen corresponding path program 1 times [2020-10-29 13:55:46,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:46,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277191482] [2020-10-29 13:55:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:51,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:51,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:55:51,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:55:51,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 13:55:51,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:51,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:55:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:55:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 13:55:51,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:55:52,382 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:55:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 13:55:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:52,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:52,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277191482] [2020-10-29 13:55:52,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:52,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:55:52,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117823003] [2020-10-29 13:55:52,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:55:52,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:52,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:55:52,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:55:52,526 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 9 states. [2020-10-29 13:55:53,050 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:54,811 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 13:55:55,211 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:55:55,638 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-29 13:55:56,066 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:55:56,440 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-29 13:55:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:57,063 INFO L93 Difference]: Finished difference Result 1142 states and 1845 transitions. [2020-10-29 13:55:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:55:57,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-29 13:55:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:57,110 INFO L225 Difference]: With dead ends: 1142 [2020-10-29 13:55:57,110 INFO L226 Difference]: Without dead ends: 994 [2020-10-29 13:55:57,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-29 13:55:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2020-10-29 13:55:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 386. [2020-10-29 13:55:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-29 13:55:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 577 transitions. [2020-10-29 13:55:57,250 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 577 transitions. Word has length 100 [2020-10-29 13:55:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:57,251 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 577 transitions. [2020-10-29 13:55:57,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:55:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 577 transitions. [2020-10-29 13:55:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:55:57,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:57,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:57,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:55:57,257 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:57,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1129419341, now seen corresponding path program 1 times [2020-10-29 13:55:57,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:57,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312719837] [2020-10-29 13:55:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:57,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:59,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:55:59,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:55:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1696 [2020-10-29 13:55:59,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:59,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:55:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:55:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:55:59,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:59,546 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:55:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:59,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:59,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:59,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:59,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:55:59,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:59,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:59,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312719837] [2020-10-29 13:55:59,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:59,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:55:59,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567227614] [2020-10-29 13:55:59,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:55:59,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:59,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:55:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:55:59,726 INFO L87 Difference]: Start difference. First operand 386 states and 577 transitions. Second operand 9 states. [2020-10-29 13:56:01,705 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:56:02,091 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:56:02,489 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:02,918 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:56:03,321 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:56:03,816 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-29 13:56:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:05,440 INFO L93 Difference]: Finished difference Result 1919 states and 2979 transitions. [2020-10-29 13:56:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:56:05,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-29 13:56:05,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:05,458 INFO L225 Difference]: With dead ends: 1919 [2020-10-29 13:56:05,458 INFO L226 Difference]: Without dead ends: 1632 [2020-10-29 13:56:05,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:56:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-10-29 13:56:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1617. [2020-10-29 13:56:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-10-29 13:56:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2506 transitions. [2020-10-29 13:56:05,628 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2506 transitions. Word has length 101 [2020-10-29 13:56:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:05,628 INFO L481 AbstractCegarLoop]: Abstraction has 1617 states and 2506 transitions. [2020-10-29 13:56:05,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:56:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2506 transitions. [2020-10-29 13:56:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:56:05,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:05,635 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] [2020-10-29 13:56:05,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:56:05,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:05,636 INFO L82 PathProgramCache]: Analyzing trace with hash -765078645, now seen corresponding path program 1 times [2020-10-29 13:56:05,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:05,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607477453] [2020-10-29 13:56:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:05,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:06,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:06,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:56:06,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:56:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-29 13:56:06,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:06,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:56:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:56:06,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:56:06,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:06,953 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:07,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:07,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:56:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:07,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:56:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:07,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607477453] [2020-10-29 13:56:07,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:07,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:56:07,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653073648] [2020-10-29 13:56:07,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:56:07,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:07,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:56:07,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:56:07,064 INFO L87 Difference]: Start difference. First operand 1617 states and 2506 transitions. Second operand 6 states. [2020-10-29 13:56:07,459 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:56:08,908 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:09,641 INFO L93 Difference]: Finished difference Result 4432 states and 6938 transitions. [2020-10-29 13:56:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:56:09,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-29 13:56:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:09,658 INFO L225 Difference]: With dead ends: 4432 [2020-10-29 13:56:09,659 INFO L226 Difference]: Without dead ends: 2882 [2020-10-29 13:56:09,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:56:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-10-29 13:56:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2879. [2020-10-29 13:56:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-29 13:56:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4483 transitions. [2020-10-29 13:56:09,881 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4483 transitions. Word has length 102 [2020-10-29 13:56:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:09,882 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 4483 transitions. [2020-10-29 13:56:09,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:56:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4483 transitions. [2020-10-29 13:56:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:56:09,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:09,887 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] [2020-10-29 13:56:09,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:56:09,887 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:09,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1281000514, now seen corresponding path program 1 times [2020-10-29 13:56:09,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:09,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11751357] [2020-10-29 13:56:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:10,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:10,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:56:10,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:56:10,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-29 13:56:10,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:10,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:56:10,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:56:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 13:56:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:11,059 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:11,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 13:56:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:11,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:56:11,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:56:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:11,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11751357] [2020-10-29 13:56:11,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:11,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:56:11,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290899221] [2020-10-29 13:56:11,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:56:11,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:11,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:56:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:56:11,159 INFO L87 Difference]: Start difference. First operand 2879 states and 4483 transitions. Second operand 6 states. [2020-10-29 13:56:11,590 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:56:12,823 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:13,555 INFO L93 Difference]: Finished difference Result 7760 states and 12154 transitions. [2020-10-29 13:56:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:56:13,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-29 13:56:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:13,583 INFO L225 Difference]: With dead ends: 7760 [2020-10-29 13:56:13,583 INFO L226 Difference]: Without dead ends: 5038 [2020-10-29 13:56:13,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:56:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2020-10-29 13:56:13,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 5035. [2020-10-29 13:56:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5035 states. [2020-10-29 13:56:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 7837 transitions. [2020-10-29 13:56:14,005 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 7837 transitions. Word has length 102 [2020-10-29 13:56:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:14,005 INFO L481 AbstractCegarLoop]: Abstraction has 5035 states and 7837 transitions. [2020-10-29 13:56:14,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:56:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 7837 transitions. [2020-10-29 13:56:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:56:14,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:14,010 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] [2020-10-29 13:56:14,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:56:14,011 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:14,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1737460687, now seen corresponding path program 1 times [2020-10-29 13:56:14,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:14,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800942738] [2020-10-29 13:56:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:14,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:14,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:14,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:56:14,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:56:14,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-29 13:56:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:14,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:56:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:56:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:56:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:15,242 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:15,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:15,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:15,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:15,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 13:56:15,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:15,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:56:15,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:56:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:15,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800942738] [2020-10-29 13:56:15,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:15,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:56:15,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697680105] [2020-10-29 13:56:15,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:56:15,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:56:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:56:15,359 INFO L87 Difference]: Start difference. First operand 5035 states and 7837 transitions. Second operand 6 states. [2020-10-29 13:56:15,805 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:56:17,070 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:18,055 INFO L93 Difference]: Finished difference Result 14119 states and 22083 transitions. [2020-10-29 13:56:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:56:18,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-29 13:56:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:18,108 INFO L225 Difference]: With dead ends: 14119 [2020-10-29 13:56:18,108 INFO L226 Difference]: Without dead ends: 9282 [2020-10-29 13:56:18,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:56:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9282 states. [2020-10-29 13:56:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9282 to 9279. [2020-10-29 13:56:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9279 states. [2020-10-29 13:56:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9279 states to 9279 states and 14443 transitions. [2020-10-29 13:56:18,886 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 14443 transitions. Word has length 102 [2020-10-29 13:56:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:18,886 INFO L481 AbstractCegarLoop]: Abstraction has 9279 states and 14443 transitions. [2020-10-29 13:56:18,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:56:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 14443 transitions. [2020-10-29 13:56:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:56:18,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:18,892 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] [2020-10-29 13:56:18,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:56:18,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:18,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1253070765, now seen corresponding path program 1 times [2020-10-29 13:56:18,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:18,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083362846] [2020-10-29 13:56:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:19,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:19,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:56:19,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:56:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-29 13:56:19,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:19,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:56:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:56:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:56:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:20,128 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:20,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:20,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:20,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:56:20,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:20,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:56:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:20,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083362846] [2020-10-29 13:56:20,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:20,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:56:20,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927621631] [2020-10-29 13:56:20,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:56:20,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:20,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:56:20,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:56:20,209 INFO L87 Difference]: Start difference. First operand 9279 states and 14443 transitions. Second operand 6 states. [2020-10-29 13:56:20,641 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:21,991 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 13:56:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:23,431 INFO L93 Difference]: Finished difference Result 27113 states and 42299 transitions. [2020-10-29 13:56:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:56:23,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-29 13:56:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:23,493 INFO L225 Difference]: With dead ends: 27113 [2020-10-29 13:56:23,493 INFO L226 Difference]: Without dead ends: 17954 [2020-10-29 13:56:23,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:56:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17954 states. [2020-10-29 13:56:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17954 to 17951. [2020-10-29 13:56:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17951 states. [2020-10-29 13:56:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17951 states to 17951 states and 27870 transitions. [2020-10-29 13:56:24,778 INFO L78 Accepts]: Start accepts. Automaton has 17951 states and 27870 transitions. Word has length 102 [2020-10-29 13:56:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:24,778 INFO L481 AbstractCegarLoop]: Abstraction has 17951 states and 27870 transitions. [2020-10-29 13:56:24,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:56:24,778 INFO L276 IsEmpty]: Start isEmpty. Operand 17951 states and 27870 transitions. [2020-10-29 13:56:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:56:24,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:24,788 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] [2020-10-29 13:56:24,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:56:24,788 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash -827301988, now seen corresponding path program 1 times [2020-10-29 13:56:24,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:24,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410941023] [2020-10-29 13:56:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:25,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:25,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:56:25,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:56:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:25,965 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:26,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:26,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 13:56:26,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:26,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:56:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:26,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410941023] [2020-10-29 13:56:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:26,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:56:26,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717132493] [2020-10-29 13:56:26,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:56:26,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:26,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:56:26,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:56:26,077 INFO L87 Difference]: Start difference. First operand 17951 states and 27870 transitions. Second operand 6 states. [2020-10-29 13:56:26,457 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:56:27,991 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 13:56:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:30,417 INFO L93 Difference]: Finished difference Result 53015 states and 82276 transitions. [2020-10-29 13:56:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:56:30,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-29 13:56:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:30,513 INFO L225 Difference]: With dead ends: 53015 [2020-10-29 13:56:30,514 INFO L226 Difference]: Without dead ends: 35154 [2020-10-29 13:56:30,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:56:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35154 states. [2020-10-29 13:56:32,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35154 to 35151. [2020-10-29 13:56:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35151 states. [2020-10-29 13:56:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35151 states to 35151 states and 54218 transitions. [2020-10-29 13:56:32,738 INFO L78 Accepts]: Start accepts. Automaton has 35151 states and 54218 transitions. Word has length 102 [2020-10-29 13:56:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:32,739 INFO L481 AbstractCegarLoop]: Abstraction has 35151 states and 54218 transitions. [2020-10-29 13:56:32,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:56:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 35151 states and 54218 transitions. [2020-10-29 13:56:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:56:32,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:32,752 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] [2020-10-29 13:56:32,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:56:32,753 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:32,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:32,753 INFO L82 PathProgramCache]: Analyzing trace with hash 612697950, now seen corresponding path program 1 times [2020-10-29 13:56:32,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:32,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058570677] [2020-10-29 13:56:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:36,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:36,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:56:36,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:56:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3389 [2020-10-29 13:56:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:36,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:56:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:56:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:56:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:36,462 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2020-10-29 13:56:36,843 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:56:36,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:36,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:36,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:36,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:56:36,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:36,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:36,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058570677] [2020-10-29 13:56:36,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:36,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:56:36,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882289888] [2020-10-29 13:56:36,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:56:36,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:36,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:56:36,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:56:36,912 INFO L87 Difference]: Start difference. First operand 35151 states and 54218 transitions. Second operand 9 states. [2020-10-29 13:56:37,345 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:40,810 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:56:41,294 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:56:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:54,193 INFO L93 Difference]: Finished difference Result 211935 states and 326441 transitions. [2020-10-29 13:56:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:56:54,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:56:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:54,916 INFO L225 Difference]: With dead ends: 211935 [2020-10-29 13:56:54,916 INFO L226 Difference]: Without dead ends: 182716 [2020-10-29 13:56:55,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:56:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182716 states. [2020-10-29 13:57:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182716 to 35361. [2020-10-29 13:57:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35361 states. [2020-10-29 13:57:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35361 states to 35361 states and 54494 transitions. [2020-10-29 13:57:00,950 INFO L78 Accepts]: Start accepts. Automaton has 35361 states and 54494 transitions. Word has length 103 [2020-10-29 13:57:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:00,950 INFO L481 AbstractCegarLoop]: Abstraction has 35361 states and 54494 transitions. [2020-10-29 13:57:00,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:57:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 35361 states and 54494 transitions. [2020-10-29 13:57:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:57:00,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:00,963 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] [2020-10-29 13:57:00,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:57:00,964 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:00,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1129679298, now seen corresponding path program 1 times [2020-10-29 13:57:00,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:00,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2496135] [2020-10-29 13:57:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:02,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:02,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:57:02,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:57:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1899 [2020-10-29 13:57:02,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:02,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:57:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:02,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:57:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:03,282 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 25 [2020-10-29 13:57:03,682 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:57:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:03,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:03,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:57:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:03,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:03,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2496135] [2020-10-29 13:57:03,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:03,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:57:03,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135147719] [2020-10-29 13:57:03,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:57:03,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:03,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:57:03,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:57:03,767 INFO L87 Difference]: Start difference. First operand 35361 states and 54494 transitions. Second operand 9 states. [2020-10-29 13:57:04,221 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:57:07,164 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:57:07,685 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:57:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:23,460 INFO L93 Difference]: Finished difference Result 152158 states and 233838 transitions. [2020-10-29 13:57:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 13:57:23,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:57:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:23,729 INFO L225 Difference]: With dead ends: 152158 [2020-10-29 13:57:23,729 INFO L226 Difference]: Without dead ends: 139515 [2020-10-29 13:57:23,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 13:57:24,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139515 states. [2020-10-29 13:57:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139515 to 35911. [2020-10-29 13:57:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35911 states. [2020-10-29 13:57:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35911 states to 35911 states and 55292 transitions. [2020-10-29 13:57:28,667 INFO L78 Accepts]: Start accepts. Automaton has 35911 states and 55292 transitions. Word has length 103 [2020-10-29 13:57:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:28,668 INFO L481 AbstractCegarLoop]: Abstraction has 35911 states and 55292 transitions. [2020-10-29 13:57:28,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:57:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 35911 states and 55292 transitions. [2020-10-29 13:57:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:57:28,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:28,682 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] [2020-10-29 13:57:28,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:57:28,682 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 669828574, now seen corresponding path program 1 times [2020-10-29 13:57:28,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:28,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591996426] [2020-10-29 13:57:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:31,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:31,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:57:31,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2764 [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:57:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:32,043 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:57:32,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:32,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:57:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:32,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:32,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591996426] [2020-10-29 13:57:32,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:32,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:57:32,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610084955] [2020-10-29 13:57:32,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:57:32,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:57:32,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:57:32,119 INFO L87 Difference]: Start difference. First operand 35911 states and 55292 transitions. Second operand 9 states. [2020-10-29 13:57:32,692 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:57:36,844 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:57:37,505 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:57:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:54,775 INFO L93 Difference]: Finished difference Result 157434 states and 242169 transitions. [2020-10-29 13:57:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 13:57:54,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:57:54,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:55,008 INFO L225 Difference]: With dead ends: 157434 [2020-10-29 13:57:55,008 INFO L226 Difference]: Without dead ends: 150438 [2020-10-29 13:57:55,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-29 13:57:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150438 states. [2020-10-29 13:58:00,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150438 to 35911. [2020-10-29 13:58:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35911 states. [2020-10-29 13:58:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35911 states to 35911 states and 55288 transitions. [2020-10-29 13:58:00,371 INFO L78 Accepts]: Start accepts. Automaton has 35911 states and 55288 transitions. Word has length 103 [2020-10-29 13:58:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:00,371 INFO L481 AbstractCegarLoop]: Abstraction has 35911 states and 55288 transitions. [2020-10-29 13:58:00,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:58:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 35911 states and 55288 transitions. [2020-10-29 13:58:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:58:00,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:00,383 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] [2020-10-29 13:58:00,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:58:00,383 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:00,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1810392734, now seen corresponding path program 1 times [2020-10-29 13:58:00,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:00,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639507225] [2020-10-29 13:58:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:00,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:02,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:02,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:58:02,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:58:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-29 13:58:02,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:02,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:58:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 13:58:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:03,402 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:03,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:03,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:03,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:58:03,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:03,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:03,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639507225] [2020-10-29 13:58:03,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:03,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:58:03,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417775984] [2020-10-29 13:58:03,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:58:03,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:03,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:58:03,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:58:03,465 INFO L87 Difference]: Start difference. First operand 35911 states and 55288 transitions. Second operand 9 states. [2020-10-29 13:58:03,912 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:58:08,212 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:08,942 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:58:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:31,971 INFO L93 Difference]: Finished difference Result 182375 states and 279537 transitions. [2020-10-29 13:58:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:58:31,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:58:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:32,459 INFO L225 Difference]: With dead ends: 182375 [2020-10-29 13:58:32,459 INFO L226 Difference]: Without dead ends: 166692 [2020-10-29 13:58:32,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:58:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166692 states. [2020-10-29 13:58:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166692 to 36539. [2020-10-29 13:58:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36539 states. [2020-10-29 13:58:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36539 states to 36539 states and 56152 transitions. [2020-10-29 13:58:39,006 INFO L78 Accepts]: Start accepts. Automaton has 36539 states and 56152 transitions. Word has length 103 [2020-10-29 13:58:39,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:39,007 INFO L481 AbstractCegarLoop]: Abstraction has 36539 states and 56152 transitions. [2020-10-29 13:58:39,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:58:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 36539 states and 56152 transitions. [2020-10-29 13:58:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:58:39,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:39,018 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] [2020-10-29 13:58:39,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:58:39,019 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:39,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1179555582, now seen corresponding path program 1 times [2020-10-29 13:58:39,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:39,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282156348] [2020-10-29 13:58:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:41,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:58:41,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:58:41,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2040 [2020-10-29 13:58:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:41,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:58:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:58:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:41,655 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:58:41,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:41,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:41,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:41,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:41,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:58:41,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:41,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:41,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282156348] [2020-10-29 13:58:41,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:41,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:58:41,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357787094] [2020-10-29 13:58:41,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:58:41,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:41,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:58:41,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:58:41,707 INFO L87 Difference]: Start difference. First operand 36539 states and 56152 transitions. Second operand 9 states. [2020-10-29 13:58:42,174 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:58:47,021 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-29 13:58:47,735 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:59:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:16,580 INFO L93 Difference]: Finished difference Result 202940 states and 311938 transitions. [2020-10-29 13:59:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:59:16,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:59:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:16,989 INFO L225 Difference]: With dead ends: 202940 [2020-10-29 13:59:16,990 INFO L226 Difference]: Without dead ends: 178633 [2020-10-29 13:59:17,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:59:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178633 states. [2020-10-29 13:59:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178633 to 37414. [2020-10-29 13:59:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37414 states. [2020-10-29 13:59:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37414 states to 37414 states and 57324 transitions. [2020-10-29 13:59:24,253 INFO L78 Accepts]: Start accepts. Automaton has 37414 states and 57324 transitions. Word has length 103 [2020-10-29 13:59:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:24,253 INFO L481 AbstractCegarLoop]: Abstraction has 37414 states and 57324 transitions. [2020-10-29 13:59:24,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:59:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 37414 states and 57324 transitions. [2020-10-29 13:59:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:59:24,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:24,264 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] [2020-10-29 13:59:24,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:59:24,265 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:24,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1461773157, now seen corresponding path program 1 times [2020-10-29 13:59:24,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:24,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664665165] [2020-10-29 13:59:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:59:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:59:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-29 13:59:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:24,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:59:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:59:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:59:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:25,330 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:25,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:59:25,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:25,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664665165] [2020-10-29 13:59:25,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:25,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:25,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703229803] [2020-10-29 13:59:25,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:59:25,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:25,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:59:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:25,387 INFO L87 Difference]: Start difference. First operand 37414 states and 57324 transitions. Second operand 6 states.