/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.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:10:27,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:10:27,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:10:27,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:10:27,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:10:27,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:10:27,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:10:27,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:10:27,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:10:27,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:10:27,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:10:27,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:10:27,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:10:27,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:10:27,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:10:27,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:10:27,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:10:27,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:10:27,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:10:27,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:10:27,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:10:27,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:10:27,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:10:27,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:10:27,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:10:27,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:10:27,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:10:27,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:10:27,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:10:27,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:10:27,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:10:27,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:10:27,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:10:27,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:10:27,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:10:27,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:10:27,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:10:27,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:10:27,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:10:27,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:10:27,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:10:27,412 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 14:10:27,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:10:27,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:10:27,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:10:27,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:10:27,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:10:27,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:10:27,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:10:27,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:10:27,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:10:27,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:10:27,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:10:27,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:10:27,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:10:27,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:10:27,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:10:27,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:10:27,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:10:27,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:10:27,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:10:27,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:10:27,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:10:27,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:10:27,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:10:27,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:10:27,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:10:27,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:10:27,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:10:27,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:10:27,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:10:27,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:10:27,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:10:27,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:10:27,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:10:27,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:10:27,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:10:27,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 14:10:28,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bc2d46e/61f9e0b4610f49538f7c3a02a1b3066a/FLAG3acff164f [2020-10-29 14:10:28,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:10:28,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 14:10:28,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bc2d46e/61f9e0b4610f49538f7c3a02a1b3066a/FLAG3acff164f [2020-10-29 14:10:29,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bc2d46e/61f9e0b4610f49538f7c3a02a1b3066a [2020-10-29 14:10:29,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:10:29,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:10:29,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:10:29,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:10:29,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:10:29,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:10:29" (1/1) ... [2020-10-29 14:10:29,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7ffae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:29, skipping insertion in model container [2020-10-29 14:10:29,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:10:29" (1/1) ... [2020-10-29 14:10:29,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:10:29,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:10:29,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:10:29,849 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:10:30,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:10:30,193 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:10:30,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30 WrapperNode [2020-10-29 14:10:30,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:10:30,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:10:30,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:10:30,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:10:30,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (1/1) ... [2020-10-29 14:10:30,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:10:30,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:10:30,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:10:30,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:10:30,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (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 14:10:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:10:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:10:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:10:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:10:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:10:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:10:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:10:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:10:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:10:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:10:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:10:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:10:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:10:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 14:10:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:10:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:10:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:10:33,001 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:10:33,002 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:10:33,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:10:33 BoogieIcfgContainer [2020-10-29 14:10:33,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:10:33,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:10:33,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:10:33,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:10:33,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:10:29" (1/3) ... [2020-10-29 14:10:33,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b9aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:10:33, skipping insertion in model container [2020-10-29 14:10:33,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:10:30" (2/3) ... [2020-10-29 14:10:33,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b9aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:10:33, skipping insertion in model container [2020-10-29 14:10:33,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:10:33" (3/3) ... [2020-10-29 14:10:33,015 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 14:10:33,029 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:10:33,035 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:10:33,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:10:33,082 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:10:33,082 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:10:33,082 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:10:33,082 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:10:33,082 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:10:33,082 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:10:33,083 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:10:33,083 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:10:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states. [2020-10-29 14:10:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 14:10:33,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:33,147 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] [2020-10-29 14:10:33,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash -374516070, now seen corresponding path program 1 times [2020-10-29 14:10:33,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:33,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777711954] [2020-10-29 14:10:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:34,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:36,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:38,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:38,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 14:10:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:10:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 14:10:38,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:38,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:10:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-29 14:10:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 14:10:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:10:40,288 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:10:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:40,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 14:10:40,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:40,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:40,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:10:40,517 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 14:10:40,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777711954] [2020-10-29 14:10:40,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:40,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:10:40,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445123634] [2020-10-29 14:10:40,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:10:40,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:10:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:10:40,563 INFO L87 Difference]: Start difference. First operand 759 states. Second operand 4 states. [2020-10-29 14:10:42,154 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 14:10:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:48,456 INFO L93 Difference]: Finished difference Result 1195 states and 2118 transitions. [2020-10-29 14:10:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:10:48,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-10-29 14:10:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:48,499 INFO L225 Difference]: With dead ends: 1195 [2020-10-29 14:10:48,500 INFO L226 Difference]: Without dead ends: 960 [2020-10-29 14:10:48,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-29 14:10:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 957. [2020-10-29 14:10:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-10-29 14:10:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1675 transitions. [2020-10-29 14:10:48,640 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1675 transitions. Word has length 198 [2020-10-29 14:10:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:48,642 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1675 transitions. [2020-10-29 14:10:48,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:10:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1675 transitions. [2020-10-29 14:10:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 14:10:48,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:48,648 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] [2020-10-29 14:10:48,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:10:48,648 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:48,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:48,649 INFO L82 PathProgramCache]: Analyzing trace with hash -518023947, now seen corresponding path program 1 times [2020-10-29 14:10:48,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:48,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70050540] [2020-10-29 14:10:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:48,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:53,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 14:10:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:10:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-29 14:10:53,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:53,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 14:10:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:10:55,381 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:10:55,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:55,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:55,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:55,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:55,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 14:10:55,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:55,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:55,624 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 14:10:55,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70050540] [2020-10-29 14:10:55,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:55,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:55,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622487053] [2020-10-29 14:10:55,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:55,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:55,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:55,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:55,634 INFO L87 Difference]: Start difference. First operand 957 states and 1675 transitions. Second operand 5 states. [2020-10-29 14:11:04,724 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:11:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:04,894 INFO L93 Difference]: Finished difference Result 2728 states and 4767 transitions. [2020-10-29 14:11:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:04,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-29 14:11:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:04,912 INFO L225 Difference]: With dead ends: 2728 [2020-10-29 14:11:04,912 INFO L226 Difference]: Without dead ends: 1848 [2020-10-29 14:11:04,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-10-29 14:11:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1845. [2020-10-29 14:11:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1845 states. [2020-10-29 14:11:05,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 3214 transitions. [2020-10-29 14:11:05,067 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 3214 transitions. Word has length 202 [2020-10-29 14:11:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:05,070 INFO L481 AbstractCegarLoop]: Abstraction has 1845 states and 3214 transitions. [2020-10-29 14:11:05,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 3214 transitions. [2020-10-29 14:11:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 14:11:05,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:05,080 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] [2020-10-29 14:11:05,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:11:05,080 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:05,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2082442474, now seen corresponding path program 1 times [2020-10-29 14:11:05,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:05,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894171534] [2020-10-29 14:11:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:08,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:10,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:10,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-29 14:11:10,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:11:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 14:11:10,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:10,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-29 14:11:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:11:11,828 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:11:11,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:11,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:11,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:11,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:11,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:11:11,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:11,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:11,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:12,043 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 14:11:12,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894171534] [2020-10-29 14:11:12,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:12,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:12,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904532464] [2020-10-29 14:11:12,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:12,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:12,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:12,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:12,046 INFO L87 Difference]: Start difference. First operand 1845 states and 3214 transitions. Second operand 5 states. [2020-10-29 14:11:21,155 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:11:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:21,334 INFO L93 Difference]: Finished difference Result 5288 states and 9195 transitions. [2020-10-29 14:11:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:21,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-29 14:11:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:21,356 INFO L225 Difference]: With dead ends: 5288 [2020-10-29 14:11:21,356 INFO L226 Difference]: Without dead ends: 3596 [2020-10-29 14:11:21,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:21,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2020-10-29 14:11:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3593. [2020-10-29 14:11:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2020-10-29 14:11:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 6238 transitions. [2020-10-29 14:11:21,594 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 6238 transitions. Word has length 203 [2020-10-29 14:11:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:21,594 INFO L481 AbstractCegarLoop]: Abstraction has 3593 states and 6238 transitions. [2020-10-29 14:11:21,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 6238 transitions. [2020-10-29 14:11:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 14:11:21,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:21,604 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] [2020-10-29 14:11:21,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:11:21,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:21,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:21,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1453644651, now seen corresponding path program 1 times [2020-10-29 14:11:21,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:21,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717007037] [2020-10-29 14:11:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:23,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:23,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:26,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:26,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-29 14:11:26,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:11:26,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-29 14:11:26,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:26,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:26,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 14:11:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:11:28,154 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:11:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:28,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:28,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:28,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:28,396 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 14:11:28,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717007037] [2020-10-29 14:11:28,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:28,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:28,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487862113] [2020-10-29 14:11:28,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:28,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:28,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:28,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:28,398 INFO L87 Difference]: Start difference. First operand 3593 states and 6238 transitions. Second operand 5 states. [2020-10-29 14:11:37,749 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:11:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:37,950 INFO L93 Difference]: Finished difference Result 10506 states and 18221 transitions. [2020-10-29 14:11:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:37,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-29 14:11:37,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:37,988 INFO L225 Difference]: With dead ends: 10506 [2020-10-29 14:11:37,988 INFO L226 Difference]: Without dead ends: 7107 [2020-10-29 14:11:37,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2020-10-29 14:11:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 7104. [2020-10-29 14:11:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7104 states. [2020-10-29 14:11:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 12293 transitions. [2020-10-29 14:11:38,614 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 12293 transitions. Word has length 203 [2020-10-29 14:11:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:38,614 INFO L481 AbstractCegarLoop]: Abstraction has 7104 states and 12293 transitions. [2020-10-29 14:11:38,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 12293 transitions. [2020-10-29 14:11:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 14:11:38,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:38,633 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] [2020-10-29 14:11:38,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:11:38,634 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash -718493128, now seen corresponding path program 1 times [2020-10-29 14:11:38,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:38,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117036100] [2020-10-29 14:11:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:39,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 14:11:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:11:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 14:11:43,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:43,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 14:11:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:45,217 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:11:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:45,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:45,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:11:45,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:45,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:45,353 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 14:11:45,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117036100] [2020-10-29 14:11:45,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:45,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:45,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830924126] [2020-10-29 14:11:45,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:45,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:45,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:45,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:45,357 INFO L87 Difference]: Start difference. First operand 7104 states and 12293 transitions. Second operand 5 states. [2020-10-29 14:11:54,493 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:11:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:54,847 INFO L93 Difference]: Finished difference Result 20837 states and 36029 transitions. [2020-10-29 14:11:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:54,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-29 14:11:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:54,911 INFO L225 Difference]: With dead ends: 20837 [2020-10-29 14:11:54,911 INFO L226 Difference]: Without dead ends: 13932 [2020-10-29 14:11:54,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13932 states. [2020-10-29 14:11:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13932 to 13929. [2020-10-29 14:11:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13929 states. [2020-10-29 14:11:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 24003 transitions. [2020-10-29 14:11:56,280 INFO L78 Accepts]: Start accepts. Automaton has 13929 states and 24003 transitions. Word has length 204 [2020-10-29 14:11:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:56,281 INFO L481 AbstractCegarLoop]: Abstraction has 13929 states and 24003 transitions. [2020-10-29 14:11:56,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:11:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13929 states and 24003 transitions. [2020-10-29 14:11:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 14:11:56,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:56,312 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] [2020-10-29 14:11:56,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:11:56,312 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:56,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1534565635, now seen corresponding path program 1 times [2020-10-29 14:11:56,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:56,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070927438] [2020-10-29 14:11:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 14:12:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:02,878 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:12:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:12:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:02,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:12:02,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:12:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:12:02,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:02,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:12:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:12:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:12:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:03,077 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 14:12:03,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070927438] [2020-10-29 14:12:03,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:12:03,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:12:03,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655062939] [2020-10-29 14:12:03,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:12:03,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:12:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:12:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:03,079 INFO L87 Difference]: Start difference. First operand 13929 states and 24003 transitions. Second operand 5 states. [2020-10-29 14:12:13,335 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:12:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:12:13,985 INFO L93 Difference]: Finished difference Result 40528 states and 69714 transitions. [2020-10-29 14:12:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:12:13,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-29 14:12:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:12:14,052 INFO L225 Difference]: With dead ends: 40528 [2020-10-29 14:12:14,052 INFO L226 Difference]: Without dead ends: 27442 [2020-10-29 14:12:14,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:12:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27442 states. [2020-10-29 14:12:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27442 to 27439. [2020-10-29 14:12:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27439 states. [2020-10-29 14:12:16,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27439 states to 27439 states and 47088 transitions. [2020-10-29 14:12:16,136 INFO L78 Accepts]: Start accepts. Automaton has 27439 states and 47088 transitions. Word has length 204 [2020-10-29 14:12:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:12:16,136 INFO L481 AbstractCegarLoop]: Abstraction has 27439 states and 47088 transitions. [2020-10-29 14:12:16,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:12:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 27439 states and 47088 transitions. [2020-10-29 14:12:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 14:12:16,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:16,200 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] [2020-10-29 14:12:16,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:12:16,200 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:16,201 INFO L82 PathProgramCache]: Analyzing trace with hash -588890009, now seen corresponding path program 1 times [2020-10-29 14:12:16,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:16,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830350814] [2020-10-29 14:12:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:21,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 14:12:21,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:12:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 14:12:21,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:21,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:12:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:12:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 14:12:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:22,607 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:12:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:12:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:22,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:22,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:12:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:22,758 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 14:12:22,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830350814] [2020-10-29 14:12:22,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:12:22,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:12:22,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665113623] [2020-10-29 14:12:22,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:12:22,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:12:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:12:22,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:22,761 INFO L87 Difference]: Start difference. First operand 27439 states and 47088 transitions. Second operand 5 states. [2020-10-29 14:12:33,274 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:12:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:12:34,275 INFO L93 Difference]: Finished difference Result 80791 states and 138564 transitions. [2020-10-29 14:12:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:12:34,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-29 14:12:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:12:34,384 INFO L225 Difference]: With dead ends: 80791 [2020-10-29 14:12:34,384 INFO L226 Difference]: Without dead ends: 53890 [2020-10-29 14:12:34,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:12:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53890 states. [2020-10-29 14:12:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53890 to 53887. [2020-10-29 14:12:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53887 states. [2020-10-29 14:12:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53887 states to 53887 states and 92009 transitions. [2020-10-29 14:12:38,999 INFO L78 Accepts]: Start accepts. Automaton has 53887 states and 92009 transitions. Word has length 205 [2020-10-29 14:12:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:12:39,000 INFO L481 AbstractCegarLoop]: Abstraction has 53887 states and 92009 transitions. [2020-10-29 14:12:39,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:12:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 53887 states and 92009 transitions. [2020-10-29 14:12:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 14:12:39,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:39,084 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] [2020-10-29 14:12:39,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:12:39,085 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:39,085 INFO L82 PathProgramCache]: Analyzing trace with hash -88704674, now seen corresponding path program 1 times [2020-10-29 14:12:39,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:39,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397201522] [2020-10-29 14:12:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:39,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:12:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:12:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-29 14:12:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:45,705 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:12:45,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:12:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:45,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:45,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:12:45,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:12:45,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 14:12:45,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:12:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:12:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:12:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:45,879 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 14:12:45,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397201522] [2020-10-29 14:12:45,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:12:45,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:12:45,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600482215] [2020-10-29 14:12:45,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:12:45,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:12:45,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:12:45,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:45,882 INFO L87 Difference]: Start difference. First operand 53887 states and 92009 transitions. Second operand 5 states. [2020-10-29 14:13:01,426 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:13:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:13:03,982 INFO L93 Difference]: Finished difference Result 156472 states and 266750 transitions. [2020-10-29 14:13:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:13:03,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-29 14:13:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:13:04,167 INFO L225 Difference]: With dead ends: 156472 [2020-10-29 14:13:04,167 INFO L226 Difference]: Without dead ends: 105957 [2020-10-29 14:13:04,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:13:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105957 states. [2020-10-29 14:13:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105957 to 105954. [2020-10-29 14:13:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105954 states. [2020-10-29 14:13:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105954 states to 105954 states and 180102 transitions. [2020-10-29 14:13:14,300 INFO L78 Accepts]: Start accepts. Automaton has 105954 states and 180102 transitions. Word has length 205 [2020-10-29 14:13:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:13:14,301 INFO L481 AbstractCegarLoop]: Abstraction has 105954 states and 180102 transitions. [2020-10-29 14:13:14,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:13:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 105954 states and 180102 transitions. [2020-10-29 14:13:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 14:13:14,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:13:14,411 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] [2020-10-29 14:13:14,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:13:14,412 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:13:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:13:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1136631788, now seen corresponding path program 1 times [2020-10-29 14:13:14,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:13:14,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511438069] [2020-10-29 14:13:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:13:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:14,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:15,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:19,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:19,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 14:13:19,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:13:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 14:13:19,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:19,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:13:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:13:19,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 14:13:19,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:13:20,883 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-29 14:13:20,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:20,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:20,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:13:21,059 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 14:13:21,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511438069] [2020-10-29 14:13:21,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:21,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:13:21,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247865361] [2020-10-29 14:13:21,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:13:21,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:21,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:13:21,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:21,061 INFO L87 Difference]: Start difference. First operand 105954 states and 180102 transitions. Second operand 5 states. [2020-10-29 14:13:43,916 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 14:13:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:13:49,746 INFO L93 Difference]: Finished difference Result 312651 states and 531294 transitions. [2020-10-29 14:13:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:13:49,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-29 14:13:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:13:50,370 INFO L225 Difference]: With dead ends: 312651 [2020-10-29 14:13:50,370 INFO L226 Difference]: Without dead ends: 208670 [2020-10-29 14:13:50,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:13:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208670 states.