/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.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:14:10,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:14:10,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:14:10,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:14:10,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:14:10,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:14:10,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:14:10,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:14:10,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:14:10,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:14:10,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:14:10,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:14:10,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:14:10,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:14:10,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:14:10,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:14:10,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:14:10,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:14:10,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:14:10,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:14:10,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:14:10,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:14:10,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:14:10,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:14:10,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:14:10,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:14:10,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:14:10,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:14:10,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:14:10,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:14:10,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:14:10,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:14:10,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:14:10,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:14:10,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:14:10,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:14:10,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:14:10,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:14:10,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:14:10,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:14:10,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:14:10,408 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 14:14:10,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:14:10,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:14:10,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:14:10,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:14:10,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:14:10,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:14:10,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:14:10,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:14:10,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:14:10,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:14:10,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:14:10,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:14:10,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:14:10,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:14:10,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:14:10,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:14:10,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:14:10,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:14:10,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:14:10,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:14:10,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:14:10,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:14:10,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:14:10,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:14:10,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:14:10,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:14:10,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:14:10,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:14:10,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:14:10,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:14:10,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:14:10,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:14:10,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:14:10,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:14:10,964 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:14:10,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 14:14:11,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3138df66/2b5a99533d6f4ce089de6ef22a33cf42/FLAG7a6f167f7 [2020-10-29 14:14:12,314 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:14:12,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 14:14:12,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3138df66/2b5a99533d6f4ce089de6ef22a33cf42/FLAG7a6f167f7 [2020-10-29 14:14:12,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3138df66/2b5a99533d6f4ce089de6ef22a33cf42 [2020-10-29 14:14:12,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:14:12,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:14:12,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:14:12,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:14:12,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:14:12,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:14:12" (1/1) ... [2020-10-29 14:14:12,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1047a4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:12, skipping insertion in model container [2020-10-29 14:14:12,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:14:12" (1/1) ... [2020-10-29 14:14:12,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:14:13,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:14:17,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:14:18,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:14:21,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:14:21,648 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:14:21,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21 WrapperNode [2020-10-29 14:14:21,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:14:21,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:14:21,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:14:21,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:14:21,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:21,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:21,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:21,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:21,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:22,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:22,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (1/1) ... [2020-10-29 14:14:22,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:14:22,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:14:22,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:14:22,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:14:22,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (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 14:14:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:14:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:14:22,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:14:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:14:22,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:14:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:14:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:14:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:14:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:14:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:14:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:14:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:14:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:14:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:14:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:14:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:14:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:14:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:14:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:14:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:14:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:14:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:14:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:14:39,989 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:14:39,989 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:14:39,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:14:39 BoogieIcfgContainer [2020-10-29 14:14:39,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:14:40,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:14:40,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:14:40,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:14:40,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:14:12" (1/3) ... [2020-10-29 14:14:40,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a381ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:14:40, skipping insertion in model container [2020-10-29 14:14:40,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:14:21" (2/3) ... [2020-10-29 14:14:40,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a381ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:14:40, skipping insertion in model container [2020-10-29 14:14:40,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:14:39" (3/3) ... [2020-10-29 14:14:40,008 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-29 14:14:40,022 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:14:40,030 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:14:40,045 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:14:40,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:14:40,112 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:14:40,112 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:14:40,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:14:40,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:14:40,113 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:14:40,113 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:14:40,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:14:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states. [2020-10-29 14:14:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-29 14:14:40,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:14:40,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:40,309 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:14:40,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:14:40,317 INFO L82 PathProgramCache]: Analyzing trace with hash -636924727, now seen corresponding path program 1 times [2020-10-29 14:14:40,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:14:40,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250732450] [2020-10-29 14:14:40,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:14:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:42,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:44,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:45,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:46,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:46,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-29 14:14:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:14:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5377 [2020-10-29 14:14:46,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:46,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:14:46,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:14:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 14:14:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:14:49,134 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-29 14:14:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:14:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:49,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:49,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:14:49,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:14:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 14:14:49,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:49,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:14:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:14:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:14:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:14:49,925 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 14:14:49,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250732450] [2020-10-29 14:14:49,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:14:49,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:14:49,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474929138] [2020-10-29 14:14:49,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:14:49,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:14:49,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:14:49,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:14:49,954 INFO L87 Difference]: Start difference. First operand 6873 states. Second operand 5 states. [2020-10-29 14:15:48,872 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-29 14:16:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:16:03,925 INFO L93 Difference]: Finished difference Result 20483 states and 35830 transitions. [2020-10-29 14:16:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:16:03,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2020-10-29 14:16:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:16:04,032 INFO L225 Difference]: With dead ends: 20483 [2020-10-29 14:16:04,033 INFO L226 Difference]: Without dead ends: 13683 [2020-10-29 14:16:04,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:16:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13683 states. [2020-10-29 14:16:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13683 to 13680. [2020-10-29 14:16:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13680 states. [2020-10-29 14:16:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13680 states to 13680 states and 22588 transitions. [2020-10-29 14:16:04,979 INFO L78 Accepts]: Start accepts. Automaton has 13680 states and 22588 transitions. Word has length 388 [2020-10-29 14:16:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:16:04,985 INFO L481 AbstractCegarLoop]: Abstraction has 13680 states and 22588 transitions. [2020-10-29 14:16:04,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:16:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 13680 states and 22588 transitions. [2020-10-29 14:16:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-29 14:16:05,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:16:05,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:05,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:16:05,037 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:16:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:16:05,040 INFO L82 PathProgramCache]: Analyzing trace with hash -478862161, now seen corresponding path program 1 times [2020-10-29 14:16:05,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:16:05,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159977277] [2020-10-29 14:16:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:16:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:09,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:10,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:10,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-29 14:16:10,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:16:10,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 14:16:10,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:10,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:16:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:16:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 14:16:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:16:12,835 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 523 [2020-10-29 14:16:12,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:16:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:12,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:12,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:16:12,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:16:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 14:16:12,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:12,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:16:12,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:16:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:16:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:16:13,214 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 14:16:13,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159977277] [2020-10-29 14:16:13,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:16:13,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:16:13,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710171724] [2020-10-29 14:16:13,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:16:13,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:16:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:16:13,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:16:13,218 INFO L87 Difference]: Start difference. First operand 13680 states and 22588 transitions. Second operand 5 states. [2020-10-29 14:17:28,272 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 529 [2020-10-29 14:17:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:17:57,109 INFO L93 Difference]: Finished difference Result 40788 states and 67322 transitions. [2020-10-29 14:17:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:17:57,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 389 [2020-10-29 14:17:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:17:57,210 INFO L225 Difference]: With dead ends: 40788 [2020-10-29 14:17:57,210 INFO L226 Difference]: Without dead ends: 27190 [2020-10-29 14:17:57,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:17:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27190 states. [2020-10-29 14:17:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27190 to 27187. [2020-10-29 14:17:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27187 states. [2020-10-29 14:17:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27187 states to 27187 states and 44830 transitions. [2020-10-29 14:17:58,744 INFO L78 Accepts]: Start accepts. Automaton has 27187 states and 44830 transitions. Word has length 389 [2020-10-29 14:17:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:17:58,745 INFO L481 AbstractCegarLoop]: Abstraction has 27187 states and 44830 transitions. [2020-10-29 14:17:58,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:17:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27187 states and 44830 transitions. [2020-10-29 14:17:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-29 14:17:58,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:17:58,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:17:58,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:17:58,814 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:17:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:17:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash 424500799, now seen corresponding path program 1 times [2020-10-29 14:17:58,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:17:58,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180746966] [2020-10-29 14:17:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:17:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:17:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:17:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:17:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:17:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:17:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:17:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:18:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:18:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:18:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:18:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking...