/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=SHALLOWEST --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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:06:54,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:06:54,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:06:54,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:06:54,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:06:54,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:06:54,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:06:54,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:06:54,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:06:54,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:06:54,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:06:54,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:06:54,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:06:54,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:06:54,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:06:54,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:06:54,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:06:54,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:06:54,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:06:54,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:06:54,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:06:54,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:06:54,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:06:54,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:06:54,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:06:54,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:06:54,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:06:54,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:06:54,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:06:54,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:06:54,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:06:54,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:06:54,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:06:54,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:06:54,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:06:54,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:06:54,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:06:54,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:06:54,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:06:54,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:06:54,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:06:54,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:06:54,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:06:54,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:06:54,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:06:54,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:06:54,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:06:54,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:06:54,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:06:54,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:06:54,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:06:54,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:06:54,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:06:54,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:06:54,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:06:54,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:06:54,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:06:54,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:06:54,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:06:54,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:06:54,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:06:54,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:06:54,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:06:54,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:06:54,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:06:54,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:06:54,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:06:54,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:06:54,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:06:54,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:06:54,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:06:54,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:06:54,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:06:54,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:06:54,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:06:54,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:06:54,666 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:06:54,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:06:54,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9ccd58d/d0c2808e75d74332893d374ba7242b78/FLAGc2d36b966 [2020-10-27 05:06:55,671 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:06:55,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:06:55,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9ccd58d/d0c2808e75d74332893d374ba7242b78/FLAGc2d36b966 [2020-10-27 05:06:55,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9ccd58d/d0c2808e75d74332893d374ba7242b78 [2020-10-27 05:06:55,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:06:55,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:06:55,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:06:55,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:06:55,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:06:55,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:06:55" (1/1) ... [2020-10-27 05:06:55,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0e1fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:55, skipping insertion in model container [2020-10-27 05:06:55,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:06:55" (1/1) ... [2020-10-27 05:06:55,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:06:55,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:06:56,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:06:56,621 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:06:56,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:06:56,947 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:06:56,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56 WrapperNode [2020-10-27 05:06:56,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:06:56,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:06:56,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:06:56,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:06:56,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:56,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:56,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:56,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:57,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:57,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:57,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... [2020-10-27 05:06:57,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:06:57,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:06:57,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:06:57,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:06:57,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:06:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:06:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:06:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:06:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:06:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:06:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:06:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:06:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:06:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:06:57,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:06:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:06:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:06:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:06:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:06:57,246 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:06:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:06:57,247 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:06:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:06:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:06:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:06:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:06:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:06:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:06:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:06:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:06:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:06:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:06:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:06:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:06:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:06:59,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:06:59,753 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:06:59,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:06:59 BoogieIcfgContainer [2020-10-27 05:06:59,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:06:59,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:06:59,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:06:59,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:06:59,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:06:55" (1/3) ... [2020-10-27 05:06:59,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720f456e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:06:59, skipping insertion in model container [2020-10-27 05:06:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:56" (2/3) ... [2020-10-27 05:06:59,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720f456e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:06:59, skipping insertion in model container [2020-10-27 05:06:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:06:59" (3/3) ... [2020-10-27 05:06:59,765 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 05:06:59,778 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:06:59,784 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:06:59,799 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:06:59,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:06:59,835 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:06:59,835 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:06:59,835 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:06:59,835 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:06:59,836 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:06:59,836 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:06:59,836 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:06:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states. [2020-10-27 05:06:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-27 05:06:59,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:59,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:59,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash 250713994, now seen corresponding path program 1 times [2020-10-27 05:06:59,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:59,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106769746] [2020-10-27 05:06:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:03,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:03,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:05,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 05:07:05,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:07:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 05:07:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:07:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 05:07:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:07:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:07:07,059 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:07:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:07,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:07,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:07,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 05:07:07,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:07,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106769746] [2020-10-27 05:07:07,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:07,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:07:07,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690491552] [2020-10-27 05:07:07,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:07:07,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:07,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:07:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:07:07,339 INFO L87 Difference]: Start difference. First operand 754 states. Second operand 4 states. [2020-10-27 05:07:08,546 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 398 [2020-10-27 05:07:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:14,857 INFO L93 Difference]: Finished difference Result 1149 states and 2037 transitions. [2020-10-27 05:07:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:07:14,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-27 05:07:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:14,896 INFO L225 Difference]: With dead ends: 1149 [2020-10-27 05:07:14,896 INFO L226 Difference]: Without dead ends: 934 [2020-10-27 05:07:14,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-10-27 05:07:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 930. [2020-10-27 05:07:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-10-27 05:07:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1611 transitions. [2020-10-27 05:07:15,074 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1611 transitions. Word has length 208 [2020-10-27 05:07:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:15,079 INFO L481 AbstractCegarLoop]: Abstraction has 930 states and 1611 transitions. [2020-10-27 05:07:15,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:07:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1611 transitions. [2020-10-27 05:07:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-27 05:07:15,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:15,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:15,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:07:15,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:15,099 INFO L82 PathProgramCache]: Analyzing trace with hash -2078995123, now seen corresponding path program 1 times [2020-10-27 05:07:15,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:15,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568782748] [2020-10-27 05:07:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:19,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:20,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 05:07:20,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:07:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 05:07:20,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 05:07:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 05:07:21,669 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:07:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:07:21,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:21,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:21,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568782748] [2020-10-27 05:07:21,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:21,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:21,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195994580] [2020-10-27 05:07:21,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:21,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:22,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:22,006 INFO L87 Difference]: Start difference. First operand 930 states and 1611 transitions. Second operand 5 states. [2020-10-27 05:07:30,550 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:07:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:30,755 INFO L93 Difference]: Finished difference Result 2720 states and 4714 transitions. [2020-10-27 05:07:30,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:30,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-27 05:07:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:30,772 INFO L225 Difference]: With dead ends: 2720 [2020-10-27 05:07:30,773 INFO L226 Difference]: Without dead ends: 1839 [2020-10-27 05:07:30,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2020-10-27 05:07:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1836. [2020-10-27 05:07:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2020-10-27 05:07:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 3175 transitions. [2020-10-27 05:07:30,923 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 3175 transitions. Word has length 212 [2020-10-27 05:07:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:30,925 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 3175 transitions. [2020-10-27 05:07:30,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 3175 transitions. [2020-10-27 05:07:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:07:30,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:30,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:30,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:07:30,933 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1127993768, now seen corresponding path program 1 times [2020-10-27 05:07:30,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:30,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736427722] [2020-10-27 05:07:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:32,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:36,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:36,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:07:36,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:07:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-27 05:07:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 05:07:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:37,471 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:07:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:37,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:37,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:37,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:07:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:37,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:37,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736427722] [2020-10-27 05:07:37,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:37,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:37,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440906958] [2020-10-27 05:07:37,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:37,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:37,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:37,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:37,794 INFO L87 Difference]: Start difference. First operand 1836 states and 3175 transitions. Second operand 5 states. [2020-10-27 05:07:46,447 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:07:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:46,785 INFO L93 Difference]: Finished difference Result 5262 states and 9079 transitions. [2020-10-27 05:07:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:46,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 05:07:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:46,807 INFO L225 Difference]: With dead ends: 5262 [2020-10-27 05:07:46,807 INFO L226 Difference]: Without dead ends: 3569 [2020-10-27 05:07:46,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2020-10-27 05:07:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3566. [2020-10-27 05:07:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3566 states. [2020-10-27 05:07:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 6143 transitions. [2020-10-27 05:07:47,068 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 6143 transitions. Word has length 214 [2020-10-27 05:07:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:47,069 INFO L481 AbstractCegarLoop]: Abstraction has 3566 states and 6143 transitions. [2020-10-27 05:07:47,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 6143 transitions. [2020-10-27 05:07:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:07:47,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:47,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:47,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:07:47,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1204224968, now seen corresponding path program 1 times [2020-10-27 05:07:47,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:47,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399018702] [2020-10-27 05:07:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:07:52,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:07:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 05:07:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 05:07:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:53,696 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:07:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:53,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:53,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:53,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:53,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:07:53,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:53,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399018702] [2020-10-27 05:07:53,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:53,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:53,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930597796] [2020-10-27 05:07:53,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:53,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:53,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:53,965 INFO L87 Difference]: Start difference. First operand 3566 states and 6143 transitions. Second operand 5 states. [2020-10-27 05:08:02,556 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:08:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:02,833 INFO L93 Difference]: Finished difference Result 10409 states and 17912 transitions. [2020-10-27 05:08:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:02,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 05:08:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:02,869 INFO L225 Difference]: With dead ends: 10409 [2020-10-27 05:08:02,870 INFO L226 Difference]: Without dead ends: 7066 [2020-10-27 05:08:02,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2020-10-27 05:08:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 7063. [2020-10-27 05:08:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7063 states. [2020-10-27 05:08:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 12125 transitions. [2020-10-27 05:08:03,533 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 12125 transitions. Word has length 214 [2020-10-27 05:08:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:03,538 INFO L481 AbstractCegarLoop]: Abstraction has 7063 states and 12125 transitions. [2020-10-27 05:08:03,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 12125 transitions. [2020-10-27 05:08:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:08:03,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:03,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:03,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:08:03,563 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:03,564 INFO L82 PathProgramCache]: Analyzing trace with hash 772076171, now seen corresponding path program 1 times [2020-10-27 05:08:03,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:03,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816520880] [2020-10-27 05:08:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:07,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:08:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:08:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 05:08:08,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:08,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 05:08:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:10,136 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:08:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:10,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:10,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:10,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:08:10,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:10,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:10,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:10,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816520880] [2020-10-27 05:08:10,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:10,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:10,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27360509] [2020-10-27 05:08:10,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:10,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:10,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:10,306 INFO L87 Difference]: Start difference. First operand 7063 states and 12125 transitions. Second operand 5 states. [2020-10-27 05:08:19,364 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:08:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:19,703 INFO L93 Difference]: Finished difference Result 20585 states and 35285 transitions. [2020-10-27 05:08:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:19,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:08:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:19,763 INFO L225 Difference]: With dead ends: 20585 [2020-10-27 05:08:19,763 INFO L226 Difference]: Without dead ends: 13878 [2020-10-27 05:08:19,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13878 states. [2020-10-27 05:08:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13878 to 13875. [2020-10-27 05:08:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13875 states. [2020-10-27 05:08:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13875 states to 13875 states and 23717 transitions. [2020-10-27 05:08:21,315 INFO L78 Accepts]: Start accepts. Automaton has 13875 states and 23717 transitions. Word has length 215 [2020-10-27 05:08:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:21,316 INFO L481 AbstractCegarLoop]: Abstraction has 13875 states and 23717 transitions. [2020-10-27 05:08:21,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13875 states and 23717 transitions. [2020-10-27 05:08:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 05:08:21,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:21,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:21,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:08:21,352 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:21,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:21,353 INFO L82 PathProgramCache]: Analyzing trace with hash -555550513, now seen corresponding path program 1 times [2020-10-27 05:08:21,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:21,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406129284] [2020-10-27 05:08:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:23,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:26,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:26,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 05:08:26,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:08:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:08:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:26,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:08:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:27,741 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:08:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:27,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:27,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:27,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:08:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:27,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406129284] [2020-10-27 05:08:27,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:27,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:27,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45601643] [2020-10-27 05:08:27,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:27,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:27,903 INFO L87 Difference]: Start difference. First operand 13875 states and 23717 transitions. Second operand 5 states. [2020-10-27 05:08:38,180 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:08:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:38,790 INFO L93 Difference]: Finished difference Result 39977 states and 68175 transitions. [2020-10-27 05:08:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:38,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-27 05:08:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:38,863 INFO L225 Difference]: With dead ends: 39977 [2020-10-27 05:08:38,863 INFO L226 Difference]: Without dead ends: 27182 [2020-10-27 05:08:39,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27182 states. [2020-10-27 05:08:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27182 to 27179. [2020-10-27 05:08:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27179 states. [2020-10-27 05:08:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27179 states to 27179 states and 46259 transitions. [2020-10-27 05:08:41,861 INFO L78 Accepts]: Start accepts. Automaton has 27179 states and 46259 transitions. Word has length 216 [2020-10-27 05:08:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:41,862 INFO L481 AbstractCegarLoop]: Abstraction has 27179 states and 46259 transitions. [2020-10-27 05:08:41,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27179 states and 46259 transitions. [2020-10-27 05:08:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:08:41,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:41,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:41,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:08:41,916 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:41,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1634297382, now seen corresponding path program 1 times [2020-10-27 05:08:41,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:41,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212096848] [2020-10-27 05:08:41,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:42,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:08:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 05:08:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:48,254 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:08:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:08:48,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:48,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:08:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:08:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:48,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212096848] [2020-10-27 05:08:48,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:48,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:48,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82755347] [2020-10-27 05:08:48,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:08:48,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:48,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:08:48,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:08:48,403 INFO L87 Difference]: Start difference. First operand 27179 states and 46259 transitions. Second operand 6 states. [2020-10-27 05:08:49,641 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:08:57,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:57,928 INFO L93 Difference]: Finished difference Result 38590 states and 65349 transitions. [2020-10-27 05:08:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:08:57,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2020-10-27 05:08:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:57,991 INFO L225 Difference]: With dead ends: 38590 [2020-10-27 05:08:57,991 INFO L226 Difference]: Without dead ends: 27179 [2020-10-27 05:08:58,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:08:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27179 states. [2020-10-27 05:09:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27179 to 27179. [2020-10-27 05:09:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27179 states. [2020-10-27 05:09:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27179 states to 27179 states and 46067 transitions. [2020-10-27 05:09:00,907 INFO L78 Accepts]: Start accepts. Automaton has 27179 states and 46067 transitions. Word has length 217 [2020-10-27 05:09:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:00,909 INFO L481 AbstractCegarLoop]: Abstraction has 27179 states and 46067 transitions. [2020-10-27 05:09:00,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:09:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 27179 states and 46067 transitions. [2020-10-27 05:09:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:09:00,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:00,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:00,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:09:00,953 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1997059713, now seen corresponding path program 1 times [2020-10-27 05:09:00,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:00,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428874330] [2020-10-27 05:09:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:01,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:01,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:06,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 05:09:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:07,279 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:09:07,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:07,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:07,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:07,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:07,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428874330] [2020-10-27 05:09:07,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:07,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:07,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472430155] [2020-10-27 05:09:07,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:07,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:07,432 INFO L87 Difference]: Start difference. First operand 27179 states and 46067 transitions. Second operand 5 states. [2020-10-27 05:09:18,456 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:09:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:19,829 INFO L93 Difference]: Finished difference Result 81137 states and 137609 transitions. [2020-10-27 05:09:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:19,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-27 05:09:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:19,966 INFO L225 Difference]: With dead ends: 81137 [2020-10-27 05:09:19,966 INFO L226 Difference]: Without dead ends: 53994 [2020-10-27 05:09:20,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53994 states. [2020-10-27 05:09:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53994 to 53991. [2020-10-27 05:09:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53991 states. [2020-10-27 05:09:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53991 states to 53991 states and 91227 transitions. [2020-10-27 05:09:25,756 INFO L78 Accepts]: Start accepts. Automaton has 53991 states and 91227 transitions. Word has length 217 [2020-10-27 05:09:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:25,756 INFO L481 AbstractCegarLoop]: Abstraction has 53991 states and 91227 transitions. [2020-10-27 05:09:25,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:25,756 INFO L276 IsEmpty]: Start isEmpty. Operand 53991 states and 91227 transitions. [2020-10-27 05:09:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:09:25,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:25,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:25,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:09:25,815 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:25,815 INFO L82 PathProgramCache]: Analyzing trace with hash 245064430, now seen corresponding path program 1 times [2020-10-27 05:09:25,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:25,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273378962] [2020-10-27 05:09:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:30,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 05:09:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:32,273 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:09:32,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:32,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:32,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:09:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:32,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273378962] [2020-10-27 05:09:32,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:32,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:32,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906236271] [2020-10-27 05:09:32,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:32,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:32,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:32,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:32,469 INFO L87 Difference]: Start difference. First operand 53991 states and 91227 transitions. Second operand 5 states. [2020-10-27 05:09:48,927 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:09:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:52,183 INFO L93 Difference]: Finished difference Result 158237 states and 267079 transitions. [2020-10-27 05:09:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:52,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-27 05:09:52,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:52,647 INFO L225 Difference]: With dead ends: 158237 [2020-10-27 05:09:52,647 INFO L226 Difference]: Without dead ends: 105978 [2020-10-27 05:09:52,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:52,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105978 states. [2020-10-27 05:10:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105978 to 105975. [2020-10-27 05:10:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105975 states. [2020-10-27 05:10:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105975 states to 105975 states and 178339 transitions. [2020-10-27 05:10:04,414 INFO L78 Accepts]: Start accepts. Automaton has 105975 states and 178339 transitions. Word has length 217 [2020-10-27 05:10:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:04,414 INFO L481 AbstractCegarLoop]: Abstraction has 105975 states and 178339 transitions. [2020-10-27 05:10:04,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:10:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 105975 states and 178339 transitions. [2020-10-27 05:10:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 05:10:04,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:04,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:10:04,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:10:04,786 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:04,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:04,786 INFO L82 PathProgramCache]: Analyzing trace with hash 644151005, now seen corresponding path program 1 times [2020-10-27 05:10:04,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:04,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883931287] [2020-10-27 05:10:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:10:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:10:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-27 05:10:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:11,246 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-27 05:10:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:11,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:11,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:11,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:11,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:10:11,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:10:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:10:11,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:11,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883931287] [2020-10-27 05:10:11,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:11,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:10:11,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143300402] [2020-10-27 05:10:11,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:10:11,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:11,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:10:11,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:10:11,386 INFO L87 Difference]: Start difference. First operand 105975 states and 178339 transitions. Second operand 8 states. [2020-10-27 05:10:12,658 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 05:10:29,787 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 402