/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:05:30,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:05:30,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:05:30,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:05:30,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:05:30,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:05:30,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:05:30,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:05:30,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:05:30,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:05:30,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:05:30,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:05:30,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:05:30,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:05:30,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:05:30,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:05:30,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:05:30,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:05:30,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:05:30,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:05:30,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:05:30,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:05:30,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:05:30,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:05:30,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:05:30,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:05:30,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:05:30,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:05:30,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:05:30,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:05:30,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:05:30,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:05:30,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:05:30,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:05:30,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:05:30,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:05:30,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:05:30,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:05:30,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:05:30,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:05:30,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:05:30,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:05:30,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:05:30,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:05:30,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:05:30,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:05:30,329 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:05:30,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:05:30,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:05:30,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:05:30,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:05:30,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:05:30,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:05:30,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:05:30,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:05:30,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:05:30,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:05:30,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:05:30,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:05:30,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:05:30,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:05:30,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:05:30,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:05:30,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:05:30,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:05:30,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:05:30,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:05:30,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:05:30,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:05:30,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:05:30,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:05:30,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:05:30,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:05:30,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:05:30,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:05:30,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:05:30,783 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:05:30,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 14:05:30,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a026866/6c9b9fb8095c40ddbe008e0765589397/FLAGf9fee5a29 [2020-10-29 14:05:31,650 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:05:31,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 14:05:31,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a026866/6c9b9fb8095c40ddbe008e0765589397/FLAGf9fee5a29 [2020-10-29 14:05:31,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13a026866/6c9b9fb8095c40ddbe008e0765589397 [2020-10-29 14:05:31,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:05:31,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:05:31,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:05:31,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:05:31,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:05:31,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:05:31" (1/1) ... [2020-10-29 14:05:31,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a2d075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:31, skipping insertion in model container [2020-10-29 14:05:31,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:05:31" (1/1) ... [2020-10-29 14:05:31,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:05:31,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:05:32,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:05:32,678 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:05:33,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:05:33,095 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:05:33,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33 WrapperNode [2020-10-29 14:05:33,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:05:33,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:05:33,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:05:33,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:05:33,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... [2020-10-29 14:05:33,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:05:33,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:05:33,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:05:33,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:05:33,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:05:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:05:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:05:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:05:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:05:33,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:05:33,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:05:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:05:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:05:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:05:33,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:05:33,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:05:33,361 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:05:33,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:05:33,361 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:05:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:05:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:05:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:05:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:05:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:05:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:05:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:05:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:05:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:05:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:05:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:05:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:05:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:05:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:05:35,745 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:05:35,746 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:05:35,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:05:35 BoogieIcfgContainer [2020-10-29 14:05:35,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:05:35,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:05:35,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:05:35,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:05:35,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:05:31" (1/3) ... [2020-10-29 14:05:35,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6ce49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:05:35, skipping insertion in model container [2020-10-29 14:05:35,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:05:33" (2/3) ... [2020-10-29 14:05:35,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6ce49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:05:35, skipping insertion in model container [2020-10-29 14:05:35,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:05:35" (3/3) ... [2020-10-29 14:05:35,757 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 14:05:35,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:05:35,775 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:05:35,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:05:35,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:05:35,819 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:05:35,819 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:05:35,819 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:05:35,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:05:35,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:05:35,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:05:35,820 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:05:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states. [2020-10-29 14:05:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 14:05:35,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:35,899 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] [2020-10-29 14:05:35,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1880527792, now seen corresponding path program 1 times [2020-10-29 14:05:35,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:35,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192282621] [2020-10-29 14:05:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:36,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:38,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:39,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:41,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 14:05:41,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:05:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 14:05:41,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:41,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:05:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 14:05:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 14:05:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:05:42,659 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:05:42,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:05:42,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:42,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:42,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:05:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:42,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192282621] [2020-10-29 14:05:42,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:42,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:05:42,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306818018] [2020-10-29 14:05:42,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:05:42,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:05:42,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:05:42,864 INFO L87 Difference]: Start difference. First operand 645 states. Second operand 4 states. [2020-10-29 14:05:43,625 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-29 14:05:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:05:47,949 INFO L93 Difference]: Finished difference Result 1180 states and 2070 transitions. [2020-10-29 14:05:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:05:47,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2020-10-29 14:05:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:05:47,981 INFO L225 Difference]: With dead ends: 1180 [2020-10-29 14:05:47,981 INFO L226 Difference]: Without dead ends: 978 [2020-10-29 14:05:47,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-29 14:05:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2020-10-29 14:05:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-29 14:05:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1538 transitions. [2020-10-29 14:05:48,137 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1538 transitions. Word has length 251 [2020-10-29 14:05:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:48,141 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1538 transitions. [2020-10-29 14:05:48,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:05:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1538 transitions. [2020-10-29 14:05:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 14:05:48,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:48,156 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] [2020-10-29 14:05:48,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:05:48,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1560200793, now seen corresponding path program 1 times [2020-10-29 14:05:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:48,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539251814] [2020-10-29 14:05:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:50,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:53,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:53,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 14:05:53,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:05:53,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 14:05:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:53,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:05:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 14:05:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:05:54,372 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:05:54,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:54,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:54,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:54,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:54,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:05:54,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:54,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:54,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:54,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:54,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:54,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539251814] [2020-10-29 14:05:54,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:54,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:54,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747823297] [2020-10-29 14:05:54,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:54,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:54,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:54,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:54,573 INFO L87 Difference]: Start difference. First operand 975 states and 1538 transitions. Second operand 5 states. [2020-10-29 14:05:59,053 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:06:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:00,861 INFO L93 Difference]: Finished difference Result 2812 states and 4419 transitions. [2020-10-29 14:06:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:00,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-29 14:06:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:00,875 INFO L225 Difference]: With dead ends: 2812 [2020-10-29 14:06:00,875 INFO L226 Difference]: Without dead ends: 1884 [2020-10-29 14:06:00,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2020-10-29 14:06:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1881. [2020-10-29 14:06:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-29 14:06:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2944 transitions. [2020-10-29 14:06:01,004 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2944 transitions. Word has length 251 [2020-10-29 14:06:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:01,006 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2944 transitions. [2020-10-29 14:06:01,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2944 transitions. [2020-10-29 14:06:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 14:06:01,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:01,013 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] [2020-10-29 14:06:01,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:06:01,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:01,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1142334572, now seen corresponding path program 1 times [2020-10-29 14:06:01,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:01,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300005761] [2020-10-29 14:06:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:04,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:06,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:06,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 14:06:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:06:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 14:06:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:06,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:06:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:06:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 14:06:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:06:07,038 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:06:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:07,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:07,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:07,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:06:07,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:07,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:07,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:07,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300005761] [2020-10-29 14:06:07,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:07,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:06:07,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257421229] [2020-10-29 14:06:07,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:06:07,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:07,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:06:07,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:06:07,248 INFO L87 Difference]: Start difference. First operand 1881 states and 2944 transitions. Second operand 4 states. [2020-10-29 14:06:13,284 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-29 14:06:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:14,963 INFO L93 Difference]: Finished difference Result 5416 states and 8439 transitions. [2020-10-29 14:06:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:06:14,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2020-10-29 14:06:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:14,992 INFO L225 Difference]: With dead ends: 5416 [2020-10-29 14:06:14,992 INFO L226 Difference]: Without dead ends: 3633 [2020-10-29 14:06:14,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2020-10-29 14:06:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3630. [2020-10-29 14:06:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3630 states. [2020-10-29 14:06:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5639 transitions. [2020-10-29 14:06:15,179 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5639 transitions. Word has length 253 [2020-10-29 14:06:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:15,179 INFO L481 AbstractCegarLoop]: Abstraction has 3630 states and 5639 transitions. [2020-10-29 14:06:15,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:06:15,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5639 transitions. [2020-10-29 14:06:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 14:06:15,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:15,189 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] [2020-10-29 14:06:15,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:06:15,189 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:15,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1629702151, now seen corresponding path program 1 times [2020-10-29 14:06:15,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:15,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955746593] [2020-10-29 14:06:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:15,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:20,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:20,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 14:06:20,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:06:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:06:20,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:20,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:20,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 14:06:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:21,088 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:06:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:21,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:21,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955746593] [2020-10-29 14:06:21,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:21,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:21,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281207916] [2020-10-29 14:06:21,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:21,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:21,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:21,356 INFO L87 Difference]: Start difference. First operand 3630 states and 5639 transitions. Second operand 5 states. [2020-10-29 14:06:25,887 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:06:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:27,647 INFO L93 Difference]: Finished difference Result 10711 states and 16615 transitions. [2020-10-29 14:06:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:27,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-29 14:06:27,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:27,687 INFO L225 Difference]: With dead ends: 10711 [2020-10-29 14:06:27,688 INFO L226 Difference]: Without dead ends: 7108 [2020-10-29 14:06:27,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7108 states. [2020-10-29 14:06:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7108 to 7105. [2020-10-29 14:06:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7105 states. [2020-10-29 14:06:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 10958 transitions. [2020-10-29 14:06:28,020 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 10958 transitions. Word has length 253 [2020-10-29 14:06:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:28,020 INFO L481 AbstractCegarLoop]: Abstraction has 7105 states and 10958 transitions. [2020-10-29 14:06:28,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 10958 transitions. [2020-10-29 14:06:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-29 14:06:28,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:28,034 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] [2020-10-29 14:06:28,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:06:28,034 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1489920867, now seen corresponding path program 1 times [2020-10-29 14:06:28,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:28,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162472485] [2020-10-29 14:06:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:33,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 14:06:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:06:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 14:06:33,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:33,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 14:06:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:34,012 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:06:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:34,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:34,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:34,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:06:34,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:34,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:34,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162472485] [2020-10-29 14:06:34,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:34,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:34,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797444511] [2020-10-29 14:06:34,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:34,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:34,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:34,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:34,188 INFO L87 Difference]: Start difference. First operand 7105 states and 10958 transitions. Second operand 5 states. [2020-10-29 14:06:39,237 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:06:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:41,323 INFO L93 Difference]: Finished difference Result 20986 states and 32326 transitions. [2020-10-29 14:06:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:41,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-29 14:06:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:41,393 INFO L225 Difference]: With dead ends: 20986 [2020-10-29 14:06:41,393 INFO L226 Difference]: Without dead ends: 13943 [2020-10-29 14:06:41,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13943 states. [2020-10-29 14:06:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13943 to 13940. [2020-10-29 14:06:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13940 states. [2020-10-29 14:06:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13940 states to 13940 states and 21358 transitions. [2020-10-29 14:06:42,179 INFO L78 Accepts]: Start accepts. Automaton has 13940 states and 21358 transitions. Word has length 255 [2020-10-29 14:06:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:42,180 INFO L481 AbstractCegarLoop]: Abstraction has 13940 states and 21358 transitions. [2020-10-29 14:06:42,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 13940 states and 21358 transitions. [2020-10-29 14:06:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 14:06:42,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:42,206 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] [2020-10-29 14:06:42,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:06:42,207 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:42,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:42,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1259459840, now seen corresponding path program 1 times [2020-10-29 14:06:42,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:42,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620590356] [2020-10-29 14:06:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:47,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:47,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 14:06:47,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:06:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 14:06:47,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:47,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:06:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:06:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 14:06:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:48,184 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:06:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:06:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:48,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:06:48,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:06:48,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:06:48,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:06:48,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:06:48,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:06:48,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:06:48,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:06:48,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:06:48,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:06:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:06:48,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620590356] [2020-10-29 14:06:48,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:06:48,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:06:48,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377424603] [2020-10-29 14:06:48,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:06:48,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:06:48,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:06:48,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:06:48,374 INFO L87 Difference]: Start difference. First operand 13940 states and 21358 transitions. Second operand 5 states. [2020-10-29 14:06:54,087 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:06:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:06:56,568 INFO L93 Difference]: Finished difference Result 40467 states and 61743 transitions. [2020-10-29 14:06:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:06:56,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-29 14:06:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:06:56,625 INFO L225 Difference]: With dead ends: 40467 [2020-10-29 14:06:56,626 INFO L226 Difference]: Without dead ends: 27244 [2020-10-29 14:06:56,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:06:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27244 states. [2020-10-29 14:06:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27244 to 27241. [2020-10-29 14:06:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27241 states. [2020-10-29 14:06:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27241 states to 27241 states and 41427 transitions. [2020-10-29 14:06:58,149 INFO L78 Accepts]: Start accepts. Automaton has 27241 states and 41427 transitions. Word has length 257 [2020-10-29 14:06:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:06:58,150 INFO L481 AbstractCegarLoop]: Abstraction has 27241 states and 41427 transitions. [2020-10-29 14:06:58,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:06:58,150 INFO L276 IsEmpty]: Start isEmpty. Operand 27241 states and 41427 transitions. [2020-10-29 14:06:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 14:06:58,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:58,199 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] [2020-10-29 14:06:58,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:06:58,199 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:58,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2130544158, now seen corresponding path program 1 times [2020-10-29 14:06:58,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:58,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181466466] [2020-10-29 14:06:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:03,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:03,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 14:07:03,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:07:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:07:03,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:03,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:07:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 14:07:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 14:07:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:03,984 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:07:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:04,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:07:04,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:04,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:04,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:04,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181466466] [2020-10-29 14:07:04,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:04,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:07:04,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778779518] [2020-10-29 14:07:04,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:07:04,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:04,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:07:04,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:07:04,113 INFO L87 Difference]: Start difference. First operand 27241 states and 41427 transitions. Second operand 4 states. [2020-10-29 14:07:11,270 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-29 14:07:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:13,770 INFO L93 Difference]: Finished difference Result 79951 states and 121267 transitions. [2020-10-29 14:07:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:07:13,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 259 [2020-10-29 14:07:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:13,850 INFO L225 Difference]: With dead ends: 79951 [2020-10-29 14:07:13,851 INFO L226 Difference]: Without dead ends: 53276 [2020-10-29 14:07:13,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53276 states. [2020-10-29 14:07:17,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53276 to 53273. [2020-10-29 14:07:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53273 states. [2020-10-29 14:07:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53273 states to 53273 states and 80379 transitions. [2020-10-29 14:07:17,261 INFO L78 Accepts]: Start accepts. Automaton has 53273 states and 80379 transitions. Word has length 259 [2020-10-29 14:07:17,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:17,261 INFO L481 AbstractCegarLoop]: Abstraction has 53273 states and 80379 transitions. [2020-10-29 14:07:17,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:07:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 53273 states and 80379 transitions. [2020-10-29 14:07:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 14:07:17,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:17,451 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] [2020-10-29 14:07:17,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:07:17,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:17,452 INFO L82 PathProgramCache]: Analyzing trace with hash 965597181, now seen corresponding path program 1 times [2020-10-29 14:07:17,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:17,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807186090] [2020-10-29 14:07:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 14:07:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:07:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:07:22,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:22,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 14:07:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:23,329 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:07:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:23,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:23,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:07:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:23,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:23,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807186090] [2020-10-29 14:07:23,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:23,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:23,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002973181] [2020-10-29 14:07:23,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:23,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:23,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:23,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:23,493 INFO L87 Difference]: Start difference. First operand 53273 states and 80379 transitions. Second operand 5 states. [2020-10-29 14:07:30,219 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:07:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:33,342 INFO L93 Difference]: Finished difference Result 111011 states and 167271 transitions. [2020-10-29 14:07:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:33,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-29 14:07:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:33,407 INFO L225 Difference]: With dead ends: 111011 [2020-10-29 14:07:33,407 INFO L226 Difference]: Without dead ends: 58550 [2020-10-29 14:07:33,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:33,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2020-10-29 14:07:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 53265. [2020-10-29 14:07:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53265 states. [2020-10-29 14:07:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53265 states to 53265 states and 80335 transitions. [2020-10-29 14:07:37,066 INFO L78 Accepts]: Start accepts. Automaton has 53265 states and 80335 transitions. Word has length 259 [2020-10-29 14:07:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:37,066 INFO L481 AbstractCegarLoop]: Abstraction has 53265 states and 80335 transitions. [2020-10-29 14:07:37,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 53265 states and 80335 transitions. [2020-10-29 14:07:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-29 14:07:37,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:37,105 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] [2020-10-29 14:07:37,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:07:37,105 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash 645506315, now seen corresponding path program 1 times [2020-10-29 14:07:37,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:37,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974002053] [2020-10-29 14:07:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:42,987 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:07:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:43,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974002053] [2020-10-29 14:07:43,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:43,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:43,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630507378] [2020-10-29 14:07:43,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:43,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:43,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:43,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:43,112 INFO L87 Difference]: Start difference. First operand 53265 states and 80335 transitions. Second operand 5 states. [2020-10-29 14:07:52,470 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:07:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:57,066 INFO L93 Difference]: Finished difference Result 157023 states and 236337 transitions. [2020-10-29 14:07:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:57,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-29 14:07:57,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:57,184 INFO L225 Difference]: With dead ends: 157023 [2020-10-29 14:07:57,185 INFO L226 Difference]: Without dead ends: 104436 [2020-10-29 14:07:57,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104436 states. [2020-10-29 14:08:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104436 to 104433. [2020-10-29 14:08:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104433 states. [2020-10-29 14:08:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104433 states to 104433 states and 156229 transitions. [2020-10-29 14:08:04,891 INFO L78 Accepts]: Start accepts. Automaton has 104433 states and 156229 transitions. Word has length 261 [2020-10-29 14:08:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:04,892 INFO L481 AbstractCegarLoop]: Abstraction has 104433 states and 156229 transitions. [2020-10-29 14:08:04,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:08:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 104433 states and 156229 transitions. [2020-10-29 14:08:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 14:08:04,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:04,977 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] [2020-10-29 14:08:04,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:08:04,977 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash -821347792, now seen corresponding path program 1 times [2020-10-29 14:08:04,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:04,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146281804] [2020-10-29 14:08:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:10,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:10,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-29 14:08:10,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:08:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 14:08:10,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:10,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 14:08:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:10,799 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:08:10,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:10,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:10,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146281804] [2020-10-29 14:08:10,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:10,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:10,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041183271] [2020-10-29 14:08:10,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:10,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:10,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:10,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:10,900 INFO L87 Difference]: Start difference. First operand 104433 states and 156229 transitions. Second operand 5 states. [2020-10-29 14:08:20,840 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:08:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:25,541 INFO L93 Difference]: Finished difference Result 219419 states and 328263 transitions. [2020-10-29 14:08:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:08:25,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-29 14:08:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:25,677 INFO L225 Difference]: With dead ends: 219419 [2020-10-29 14:08:25,677 INFO L226 Difference]: Without dead ends: 115022 [2020-10-29 14:08:25,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:08:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115022 states. [2020-10-29 14:08:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115022 to 105255. [2020-10-29 14:08:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105255 states. [2020-10-29 14:08:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105255 states to 105255 states and 157603 transitions. [2020-10-29 14:08:33,759 INFO L78 Accepts]: Start accepts. Automaton has 105255 states and 157603 transitions. Word has length 263 [2020-10-29 14:08:33,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:33,760 INFO L481 AbstractCegarLoop]: Abstraction has 105255 states and 157603 transitions. [2020-10-29 14:08:33,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:08:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 105255 states and 157603 transitions. [2020-10-29 14:08:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-29 14:08:34,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:34,065 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] [2020-10-29 14:08:34,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:08:34,065 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:34,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1972382875, now seen corresponding path program 1 times [2020-10-29 14:08:34,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:34,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382355373] [2020-10-29 14:08:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:34,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:39,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 14:08:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:39,936 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-29 14:08:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:40,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382355373] [2020-10-29 14:08:40,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:40,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:40,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617886187] [2020-10-29 14:08:40,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:40,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:40,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:40,061 INFO L87 Difference]: Start difference. First operand 105255 states and 157603 transitions. Second operand 5 states. [2020-10-29 14:08:55,197 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-29 14:09:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:03,016 INFO L93 Difference]: Finished difference Result 298297 states and 445057 transitions. [2020-10-29 14:09:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:03,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-29 14:09:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:03,486 INFO L225 Difference]: With dead ends: 298297 [2020-10-29 14:09:03,486 INFO L226 Difference]: Without dead ends: 196598 [2020-10-29 14:09:03,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196598 states.