/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_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:04:48,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:04:48,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:04:48,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:04:48,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:04:48,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:04:48,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:04:48,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:04:48,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:04:48,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:04:48,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:04:48,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:04:48,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:04:48,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:04:48,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:04:48,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:04:48,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:04:48,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:04:48,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:04:48,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:04:48,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:04:48,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:04:48,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:04:48,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:04:48,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:04:48,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:04:48,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:04:48,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:04:48,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:04:48,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:04:48,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:04:48,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:04:48,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:04:48,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:04:48,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:04:48,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:04:48,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:04:48,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:04:48,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:04:48,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:04:48,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:04:48,218 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 06:04:48,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:04:48,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:04:48,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:04:48,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:04:48,271 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:04:48,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:04:48,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:04:48,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:04:48,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:04:48,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:04:48,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:04:48,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:04:48,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:04:48,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:04:48,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:04:48,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:04:48,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:04:48,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:04:48,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:04:48,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:04:48,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:04:48,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:04:48,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:04:48,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:04:48,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:04:48,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:04:48,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:04:48,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:04:48,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:04:48,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:04:48,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:04:48,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:04:48,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:04:48,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:04:48,714 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:04:48,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 06:04:48,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76e7668fc/8c8970fd406e4f009e1e559eab9adf78/FLAGc8ac49016 [2020-10-27 06:04:49,650 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:04:49,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 06:04:49,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76e7668fc/8c8970fd406e4f009e1e559eab9adf78/FLAGc8ac49016 [2020-10-27 06:04:49,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76e7668fc/8c8970fd406e4f009e1e559eab9adf78 [2020-10-27 06:04:49,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:04:49,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:04:49,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:04:49,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:04:49,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:04:49,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:49" (1/1) ... [2020-10-27 06:04:49,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa9c454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:49, skipping insertion in model container [2020-10-27 06:04:49,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:04:49" (1/1) ... [2020-10-27 06:04:49,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:04:49,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:04:50,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:04:50,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:04:51,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:04:51,469 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:04:51,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51 WrapperNode [2020-10-27 06:04:51,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:04:51,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:04:51,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:04:51,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:04:51,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (1/1) ... [2020-10-27 06:04:51,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:04:51,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:04:51,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:04:51,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:04:51,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (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 06:04:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:04:51,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:04:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:04:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:04:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:04:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:04:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:04:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:04:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:04:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:04:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:04:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:04:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:04:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:04:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:04:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:04:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:04:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:04:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:04:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:04:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:04:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:04:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:04:55,255 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:04:55,256 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:04:55,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:55 BoogieIcfgContainer [2020-10-27 06:04:55,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:04:55,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:04:55,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:04:55,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:04:55,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:04:49" (1/3) ... [2020-10-27 06:04:55,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e05d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:55, skipping insertion in model container [2020-10-27 06:04:55,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:04:51" (2/3) ... [2020-10-27 06:04:55,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e05d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:04:55, skipping insertion in model container [2020-10-27 06:04:55,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:04:55" (3/3) ... [2020-10-27 06:04:55,271 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 06:04:55,283 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:04:55,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:04:55,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:04:55,348 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:04:55,348 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:04:55,349 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:04:55,349 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:04:55,349 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:04:55,349 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:04:55,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:04:55,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:04:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states. [2020-10-27 06:04:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:04:55,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:55,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:04:55,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash 471360347, now seen corresponding path program 1 times [2020-10-27 06:04:55,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:55,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962919740] [2020-10-27 06:04:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:59,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:01,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:01,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:05:01,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:05:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 06:05:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 06:05:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:05:03,040 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:05:03,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 06:05:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:03,330 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 06:05:03,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962919740] [2020-10-27 06:05:03,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:03,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:03,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997635287] [2020-10-27 06:05:03,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:03,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:03,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:03,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:03,364 INFO L87 Difference]: Start difference. First operand 812 states. Second operand 5 states. [2020-10-27 06:05:14,262 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:05:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:17,061 INFO L93 Difference]: Finished difference Result 2336 states and 4143 transitions. [2020-10-27 06:05:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:05:17,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-27 06:05:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:17,102 INFO L225 Difference]: With dead ends: 2336 [2020-10-27 06:05:17,102 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 06:05:17,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 06:05:17,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1566. [2020-10-27 06:05:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-10-27 06:05:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2428 transitions. [2020-10-27 06:05:17,270 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2428 transitions. Word has length 331 [2020-10-27 06:05:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:17,271 INFO L481 AbstractCegarLoop]: Abstraction has 1566 states and 2428 transitions. [2020-10-27 06:05:17,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2428 transitions. [2020-10-27 06:05:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 06:05:17,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:17,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:17,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:05:17,282 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:17,283 INFO L82 PathProgramCache]: Analyzing trace with hash -76484522, now seen corresponding path program 1 times [2020-10-27 06:05:17,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944538235] [2020-10-27 06:05:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:22,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:22,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 06:05:22,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 06:05:22,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:05:22,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:22,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:22,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-27 06:05:22,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:24,355 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:05:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:24,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:24,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 06:05:24,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:24,721 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 06:05:24,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944538235] [2020-10-27 06:05:24,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:24,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:24,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126758938] [2020-10-27 06:05:24,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:24,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:24,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:24,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:24,733 INFO L87 Difference]: Start difference. First operand 1566 states and 2428 transitions. Second operand 5 states. [2020-10-27 06:05:35,006 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:05:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:37,993 INFO L93 Difference]: Finished difference Result 4541 states and 7013 transitions. [2020-10-27 06:05:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:37,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-27 06:05:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:38,012 INFO L225 Difference]: With dead ends: 4541 [2020-10-27 06:05:38,013 INFO L226 Difference]: Without dead ends: 3066 [2020-10-27 06:05:38,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2020-10-27 06:05:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3063. [2020-10-27 06:05:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3063 states. [2020-10-27 06:05:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 4722 transitions. [2020-10-27 06:05:38,195 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 4722 transitions. Word has length 333 [2020-10-27 06:05:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:38,196 INFO L481 AbstractCegarLoop]: Abstraction has 3063 states and 4722 transitions. [2020-10-27 06:05:38,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 4722 transitions. [2020-10-27 06:05:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-27 06:05:38,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:38,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:38,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:05:38,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1797737458, now seen corresponding path program 1 times [2020-10-27 06:05:38,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:38,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355914141] [2020-10-27 06:05:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:39,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:43,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:43,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-27 06:05:43,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:05:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 06:05:43,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:05:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:05:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 06:05:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:05:44,965 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:05:44,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:44,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:44,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:44,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:05:44,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:45,290 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 06:05:45,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355914141] [2020-10-27 06:05:45,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:45,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:45,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696083076] [2020-10-27 06:05:45,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:45,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:45,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:45,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:45,297 INFO L87 Difference]: Start difference. First operand 3063 states and 4722 transitions. Second operand 5 states. [2020-10-27 06:05:54,622 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:05:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:05:57,391 INFO L93 Difference]: Finished difference Result 8893 states and 13646 transitions. [2020-10-27 06:05:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:05:57,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-27 06:05:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:05:57,422 INFO L225 Difference]: With dead ends: 8893 [2020-10-27 06:05:57,422 INFO L226 Difference]: Without dead ends: 5954 [2020-10-27 06:05:57,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:05:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5954 states. [2020-10-27 06:05:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5954 to 5951. [2020-10-27 06:05:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5951 states. [2020-10-27 06:05:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 9089 transitions. [2020-10-27 06:05:57,851 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 9089 transitions. Word has length 335 [2020-10-27 06:05:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:05:57,852 INFO L481 AbstractCegarLoop]: Abstraction has 5951 states and 9089 transitions. [2020-10-27 06:05:57,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:05:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 9089 transitions. [2020-10-27 06:05:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-27 06:05:57,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:05:57,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:57,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:05:57,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:05:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:05:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1138067267, now seen corresponding path program 1 times [2020-10-27 06:05:57,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:05:57,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665875652] [2020-10-27 06:05:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:05:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:02,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 06:06:02,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:06:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 06:06:02,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 06:06:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:04,805 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:06:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:04,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:06:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:05,025 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 06:06:05,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665875652] [2020-10-27 06:06:05,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:05,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:05,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860542767] [2020-10-27 06:06:05,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:05,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:05,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:05,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:05,028 INFO L87 Difference]: Start difference. First operand 5951 states and 9089 transitions. Second operand 5 states. [2020-10-27 06:06:15,252 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:06:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:18,083 INFO L93 Difference]: Finished difference Result 17443 states and 26553 transitions. [2020-10-27 06:06:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:18,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-10-27 06:06:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:18,134 INFO L225 Difference]: With dead ends: 17443 [2020-10-27 06:06:18,134 INFO L226 Difference]: Without dead ends: 11640 [2020-10-27 06:06:18,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:18,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2020-10-27 06:06:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 11637. [2020-10-27 06:06:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11637 states. [2020-10-27 06:06:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 17621 transitions. [2020-10-27 06:06:18,869 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 17621 transitions. Word has length 337 [2020-10-27 06:06:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:18,869 INFO L481 AbstractCegarLoop]: Abstraction has 11637 states and 17621 transitions. [2020-10-27 06:06:18,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 17621 transitions. [2020-10-27 06:06:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-27 06:06:18,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:18,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:18,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:06:18,899 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:18,900 INFO L82 PathProgramCache]: Analyzing trace with hash -137489631, now seen corresponding path program 1 times [2020-10-27 06:06:18,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:18,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162580156] [2020-10-27 06:06:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:20,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:23,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:23,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-27 06:06:23,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:06:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 06:06:23,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:23,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 06:06:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:25,840 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:06:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:25,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:25,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:25,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:06:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:26,136 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 06:06:26,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162580156] [2020-10-27 06:06:26,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:26,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:26,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725077255] [2020-10-27 06:06:26,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:26,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:26,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:26,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:26,148 INFO L87 Difference]: Start difference. First operand 11637 states and 17621 transitions. Second operand 5 states. [2020-10-27 06:06:37,165 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:06:40,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:06:40,468 INFO L93 Difference]: Finished difference Result 33887 states and 51077 transitions. [2020-10-27 06:06:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:06:40,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-27 06:06:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:06:40,532 INFO L225 Difference]: With dead ends: 33887 [2020-10-27 06:06:40,532 INFO L226 Difference]: Without dead ends: 22676 [2020-10-27 06:06:40,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:06:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22676 states. [2020-10-27 06:06:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22676 to 22673. [2020-10-27 06:06:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22673 states. [2020-10-27 06:06:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22673 states to 22673 states and 34025 transitions. [2020-10-27 06:06:41,931 INFO L78 Accepts]: Start accepts. Automaton has 22673 states and 34025 transitions. Word has length 339 [2020-10-27 06:06:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:06:41,932 INFO L481 AbstractCegarLoop]: Abstraction has 22673 states and 34025 transitions. [2020-10-27 06:06:41,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:06:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 22673 states and 34025 transitions. [2020-10-27 06:06:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 06:06:41,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:06:41,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:41,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:06:41,979 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:06:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:06:41,979 INFO L82 PathProgramCache]: Analyzing trace with hash 601484327, now seen corresponding path program 1 times [2020-10-27 06:06:41,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:06:41,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779526586] [2020-10-27 06:06:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:06:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:47,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:47,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-27 06:06:47,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:06:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:06:47,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:06:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:06:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 06:06:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:48,839 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:06:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:06:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:06:48,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:06:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:06:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:06:48,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:06:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:06:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:06:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:06:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:06:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:06:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:06:48,980 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 06:06:48,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779526586] [2020-10-27 06:06:48,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:06:48,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:06:48,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298059128] [2020-10-27 06:06:48,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:06:48,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:06:48,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:06:48,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:06:48,983 INFO L87 Difference]: Start difference. First operand 22673 states and 34025 transitions. Second operand 5 states. [2020-10-27 06:07:01,004 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:07:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:04,660 INFO L93 Difference]: Finished difference Result 66089 states and 98839 transitions. [2020-10-27 06:07:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:04,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-27 06:07:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:04,762 INFO L225 Difference]: With dead ends: 66089 [2020-10-27 06:07:04,762 INFO L226 Difference]: Without dead ends: 44334 [2020-10-27 06:07:04,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44334 states. [2020-10-27 06:07:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44334 to 44331. [2020-10-27 06:07:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44331 states. [2020-10-27 06:07:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44331 states to 44331 states and 65999 transitions. [2020-10-27 06:07:07,536 INFO L78 Accepts]: Start accepts. Automaton has 44331 states and 65999 transitions. Word has length 341 [2020-10-27 06:07:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:07,536 INFO L481 AbstractCegarLoop]: Abstraction has 44331 states and 65999 transitions. [2020-10-27 06:07:07,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 44331 states and 65999 transitions. [2020-10-27 06:07:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-27 06:07:07,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:07,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:07,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:07:07,654 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:07,655 INFO L82 PathProgramCache]: Analyzing trace with hash 962742328, now seen corresponding path program 1 times [2020-10-27 06:07:07,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:07,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464252113] [2020-10-27 06:07:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:08,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:12,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:12,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-27 06:07:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:07:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 06:07:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 06:07:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:14,547 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:07:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:14,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:14,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:14,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:07:14,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:07:14,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464252113] [2020-10-27 06:07:14,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:14,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:14,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806105441] [2020-10-27 06:07:14,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:14,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:14,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:14,710 INFO L87 Difference]: Start difference. First operand 44331 states and 65999 transitions. Second operand 5 states. [2020-10-27 06:07:27,585 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:07:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:07:31,786 INFO L93 Difference]: Finished difference Result 130555 states and 193889 transitions. [2020-10-27 06:07:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:07:31,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2020-10-27 06:07:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:07:31,920 INFO L225 Difference]: With dead ends: 130555 [2020-10-27 06:07:31,920 INFO L226 Difference]: Without dead ends: 86610 [2020-10-27 06:07:31,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:07:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86610 states. [2020-10-27 06:07:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86610 to 86607. [2020-10-27 06:07:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86607 states. [2020-10-27 06:07:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86607 states to 86607 states and 127819 transitions. [2020-10-27 06:07:37,644 INFO L78 Accepts]: Start accepts. Automaton has 86607 states and 127819 transitions. Word has length 343 [2020-10-27 06:07:37,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:07:37,645 INFO L481 AbstractCegarLoop]: Abstraction has 86607 states and 127819 transitions. [2020-10-27 06:07:37,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:07:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 86607 states and 127819 transitions. [2020-10-27 06:07:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-27 06:07:37,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:37,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:07:37,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:07:37,922 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:37,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1566960617, now seen corresponding path program 1 times [2020-10-27 06:07:37,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:37,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535123726] [2020-10-27 06:07:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:42,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:42,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-27 06:07:42,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:07:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:07:42,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 06:07:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:44,797 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:07:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:44,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:44,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:07:44,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:44,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:45,045 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 06:07:45,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535123726] [2020-10-27 06:07:45,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:45,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:45,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741833999] [2020-10-27 06:07:45,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:45,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:45,048 INFO L87 Difference]: Start difference. First operand 86607 states and 127819 transitions. Second operand 5 states. [2020-10-27 06:08:03,594 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:09,728 INFO L93 Difference]: Finished difference Result 249693 states and 366623 transitions. [2020-10-27 06:08:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:09,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-27 06:08:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:10,036 INFO L225 Difference]: With dead ends: 249693 [2020-10-27 06:08:10,036 INFO L226 Difference]: Without dead ends: 168698 [2020-10-27 06:08:10,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168698 states. [2020-10-27 06:08:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168698 to 168695. [2020-10-27 06:08:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168695 states. [2020-10-27 06:08:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168695 states to 168695 states and 246715 transitions. [2020-10-27 06:08:22,879 INFO L78 Accepts]: Start accepts. Automaton has 168695 states and 246715 transitions. Word has length 345 [2020-10-27 06:08:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:22,880 INFO L481 AbstractCegarLoop]: Abstraction has 168695 states and 246715 transitions. [2020-10-27 06:08:22,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 168695 states and 246715 transitions. [2020-10-27 06:08:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-27 06:08:23,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:23,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:08:23,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:08:23,347 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1617262148, now seen corresponding path program 1 times [2020-10-27 06:08:23,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:23,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086670727] [2020-10-27 06:08:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:24,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:24,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:24,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-27 06:08:28,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:08:28,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 06:08:28,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:28,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 06:08:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:30,235 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 307 [2020-10-27 06:08:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:30,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:30,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:30,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:08:30,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:30,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:30,408 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 06:08:30,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086670727] [2020-10-27 06:08:30,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:30,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:30,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243115246] [2020-10-27 06:08:30,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:30,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:30,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:30,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:30,410 INFO L87 Difference]: Start difference. First operand 168695 states and 246715 transitions. Second operand 5 states.