/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=DEEPEST --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.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:40:51,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:40:51,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:40:51,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:40:51,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:40:51,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:40:51,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:40:51,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:40:51,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:40:51,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:40:51,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:40:51,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:40:51,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:40:51,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:40:51,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:40:51,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:40:51,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:40:51,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:40:51,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:40:51,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:40:51,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:40:51,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:40:51,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:40:51,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:40:51,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:40:51,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:40:51,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:40:51,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:40:51,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:40:51,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:40:51,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:40:51,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:40:51,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:40:51,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:40:51,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:40:51,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:40:51,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:40:51,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:40:51,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:40:51,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:40:51,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:40:51,388 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 [2020-10-28 00:40:51,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:40:51,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:40:51,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:40:51,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:40:51,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:40:51,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:40:51,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:40:51,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:40:51,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:40:51,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:40:51,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:40:51,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:40:51,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:40:51,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:40:51,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:40:51,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:40:51,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:40:51,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:40:51,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:40:51,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:40:51,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:40:51,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:40:51,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:40:51,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:40:51,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:40:51,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:40:51,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:40:51,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:40:51,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:40:51,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:40:51,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:40:51,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:40:51,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:40:51,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:40:51,867 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:40:51,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 00:40:51,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed9a5b3ef/2504cc3b092f4af6830082bdfdca0ac2/FLAGf953e8a33 [2020-10-28 00:40:52,872 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:40:52,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 00:40:52,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed9a5b3ef/2504cc3b092f4af6830082bdfdca0ac2/FLAGf953e8a33 [2020-10-28 00:40:53,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed9a5b3ef/2504cc3b092f4af6830082bdfdca0ac2 [2020-10-28 00:40:53,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:40:53,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:40:53,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:40:53,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:40:53,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:40:53,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:40:53" (1/1) ... [2020-10-28 00:40:53,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aae1318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:53, skipping insertion in model container [2020-10-28 00:40:53,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:40:53" (1/1) ... [2020-10-28 00:40:53,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:40:53,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:40:54,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:40:54,020 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:40:54,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:40:54,259 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:40:54,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54 WrapperNode [2020-10-28 00:40:54,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:40:54,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:40:54,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:40:54,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:40:54,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (1/1) ... [2020-10-28 00:40:54,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:40:54,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:40:54,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:40:54,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:40:54,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (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 [2020-10-28 00:40:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:40:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:40:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:40:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:40:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:40:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:40:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:40:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:40:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:40:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:40:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:40:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:40:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:40:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:40:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:40:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:40:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:40:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:40:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:40:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:40:54,541 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:40:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:40:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:40:58,172 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:40:58,173 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:40:58,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:40:58 BoogieIcfgContainer [2020-10-28 00:40:58,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:40:58,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:40:58,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:40:58,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:40:58,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:40:53" (1/3) ... [2020-10-28 00:40:58,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:40:58, skipping insertion in model container [2020-10-28 00:40:58,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:40:54" (2/3) ... [2020-10-28 00:40:58,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7368e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:40:58, skipping insertion in model container [2020-10-28 00:40:58,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:40:58" (3/3) ... [2020-10-28 00:40:58,210 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-28 00:40:58,224 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:40:58,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:40:58,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:40:58,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:40:58,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:40:58,289 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:40:58,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:40:58,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:40:58,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:40:58,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:40:58,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:40:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2020-10-28 00:40:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-28 00:40:58,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:40:58,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:40:58,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:40:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:40:58,372 INFO L82 PathProgramCache]: Analyzing trace with hash 48007832, now seen corresponding path program 1 times [2020-10-28 00:40:58,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:40:58,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910085710] [2020-10-28 00:40:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:40:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:40:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:00,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:04,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:41:04,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 00:41:04,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:41:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 00:41:04,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:41:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:41:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 00:41:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:41:04,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:41:06,500 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:41:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:41:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:41:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:06,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:41:06,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:41:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:41:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 00:41:06,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:41:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:41:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:41:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:41:06,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:41:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:41:06,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910085710] [2020-10-28 00:41:06,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:41:06,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:41:06,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866587276] [2020-10-28 00:41:06,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:41:06,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:41:06,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:41:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:41:06,754 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 8 states. [2020-10-28 00:41:09,496 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification that was a NOOP. DAG size: 422 [2020-10-28 00:41:20,299 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:41:22,645 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:41:25,027 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:41:27,262 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:41:29,810 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification that was a NOOP. DAG size: 415 [2020-10-28 00:41:32,090 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:41:34,460 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:41:36,746 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:41:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:41:37,137 INFO L93 Difference]: Finished difference Result 3019 states and 5220 transitions. [2020-10-28 00:41:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:41:37,144 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-28 00:41:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:41:37,195 INFO L225 Difference]: With dead ends: 3019 [2020-10-28 00:41:37,195 INFO L226 Difference]: Without dead ends: 2752 [2020-10-28 00:41:37,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-28 00:41:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-10-28 00:41:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 989. [2020-10-28 00:41:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-10-28 00:41:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1716 transitions. [2020-10-28 00:41:37,413 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1716 transitions. Word has length 218 [2020-10-28 00:41:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:41:37,415 INFO L481 AbstractCegarLoop]: Abstraction has 989 states and 1716 transitions. [2020-10-28 00:41:37,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:41:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1716 transitions. [2020-10-28 00:41:37,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-28 00:41:37,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:41:37,421 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] [2020-10-28 00:41:37,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:41:37,422 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:41:37,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:41:37,422 INFO L82 PathProgramCache]: Analyzing trace with hash -706919784, now seen corresponding path program 1 times [2020-10-28 00:41:37,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:41:37,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862599035] [2020-10-28 00:41:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:41:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:41:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:39,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:39,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:42,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:41:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 00:41:42,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:41:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-28 00:41:42,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:41:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:41:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-28 00:41:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:41:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:41:45,106 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:41:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:41:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:41:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:41:45,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:41:45,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:41:45,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:41:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 00:41:45,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:41:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:41:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:41:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:41:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:41:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:41:45,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862599035] [2020-10-28 00:41:45,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:41:45,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:41:45,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87376192] [2020-10-28 00:41:45,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:41:45,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:41:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:41:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:41:45,292 INFO L87 Difference]: Start difference. First operand 989 states and 1716 transitions. Second operand 9 states. [2020-10-28 00:41:47,892 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-28 00:41:58,440 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-28 00:42:00,686 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:42:03,108 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:42:05,659 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:42:07,957 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:42:10,475 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-28 00:42:12,778 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 419 [2020-10-28 00:42:15,187 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-28 00:42:17,484 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 417 [2020-10-28 00:42:20,823 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-28 00:42:23,365 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-28 00:42:25,879 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 419 [2020-10-28 00:42:29,786 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-28 00:42:32,231 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-28 00:42:34,567 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:42:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:42:34,616 INFO L93 Difference]: Finished difference Result 7167 states and 12190 transitions. [2020-10-28 00:42:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 00:42:34,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-10-28 00:42:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:42:34,656 INFO L225 Difference]: With dead ends: 7167 [2020-10-28 00:42:34,657 INFO L226 Difference]: Without dead ends: 6730 [2020-10-28 00:42:34,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 00:42:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2020-10-28 00:42:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 2206. [2020-10-28 00:42:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2020-10-28 00:42:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3783 transitions. [2020-10-28 00:42:34,902 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3783 transitions. Word has length 219 [2020-10-28 00:42:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:42:34,903 INFO L481 AbstractCegarLoop]: Abstraction has 2206 states and 3783 transitions. [2020-10-28 00:42:34,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:42:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3783 transitions. [2020-10-28 00:42:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 00:42:34,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:42:34,909 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] [2020-10-28 00:42:34,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:42:34,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:42:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:42:34,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1801426609, now seen corresponding path program 1 times [2020-10-28 00:42:34,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:42:34,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693249351] [2020-10-28 00:42:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:42:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:42:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:40,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:42:40,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-28 00:42:40,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:42:40,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-28 00:42:40,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:42:40,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:42:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-28 00:42:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:42:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:42:42,456 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:42:42,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:42:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:42:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:42,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:42:42,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:42:42,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:42:42,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:42:42,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:42:42,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:42:42,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:42:42,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:42:42,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:42:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:42:42,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693249351] [2020-10-28 00:42:42,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:42:42,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:42:42,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683293354] [2020-10-28 00:42:42,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:42:42,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:42:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:42:42,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:42:42,650 INFO L87 Difference]: Start difference. First operand 2206 states and 3783 transitions. Second operand 5 states. [2020-10-28 00:42:45,014 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:42:54,661 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:42:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:42:54,887 INFO L93 Difference]: Finished difference Result 6746 states and 11495 transitions. [2020-10-28 00:42:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:42:54,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-28 00:42:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:42:54,918 INFO L225 Difference]: With dead ends: 6746 [2020-10-28 00:42:54,918 INFO L226 Difference]: Without dead ends: 5264 [2020-10-28 00:42:54,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:42:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2020-10-28 00:42:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 3772. [2020-10-28 00:42:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3772 states. [2020-10-28 00:42:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 6441 transitions. [2020-10-28 00:42:55,231 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 6441 transitions. Word has length 220 [2020-10-28 00:42:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:42:55,232 INFO L481 AbstractCegarLoop]: Abstraction has 3772 states and 6441 transitions. [2020-10-28 00:42:55,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:42:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 6441 transitions. [2020-10-28 00:42:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 00:42:55,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:42:55,238 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] [2020-10-28 00:42:55,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:42:55,239 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:42:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:42:55,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1902915119, now seen corresponding path program 1 times [2020-10-28 00:42:55,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:42:55,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594743357] [2020-10-28 00:42:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:42:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:42:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:56,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:42:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:00,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:00,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 00:43:00,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:43:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 00:43:00,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:43:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-28 00:43:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:43:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:02,696 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:43:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:43:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:43:02,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:43:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:43:02,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:43:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:43:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:43:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:43:02,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594743357] [2020-10-28 00:43:02,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:43:02,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:43:02,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979854605] [2020-10-28 00:43:02,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:43:02,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:43:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:43:02,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:43:02,802 INFO L87 Difference]: Start difference. First operand 3772 states and 6441 transitions. Second operand 5 states. [2020-10-28 00:43:05,097 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:43:14,664 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:43:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:43:15,071 INFO L93 Difference]: Finished difference Result 12742 states and 21669 transitions. [2020-10-28 00:43:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:43:15,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-28 00:43:15,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:43:15,111 INFO L225 Difference]: With dead ends: 12742 [2020-10-28 00:43:15,112 INFO L226 Difference]: Without dead ends: 9788 [2020-10-28 00:43:15,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:43:15,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9788 states. [2020-10-28 00:43:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9788 to 6817. [2020-10-28 00:43:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6817 states. [2020-10-28 00:43:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6817 states to 6817 states and 11603 transitions. [2020-10-28 00:43:15,730 INFO L78 Accepts]: Start accepts. Automaton has 6817 states and 11603 transitions. Word has length 221 [2020-10-28 00:43:15,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:43:15,730 INFO L481 AbstractCegarLoop]: Abstraction has 6817 states and 11603 transitions. [2020-10-28 00:43:15,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:43:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6817 states and 11603 transitions. [2020-10-28 00:43:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-28 00:43:15,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:43:15,737 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] [2020-10-28 00:43:15,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:43:15,737 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:43:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:43:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash -632092982, now seen corresponding path program 1 times [2020-10-28 00:43:15,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:43:15,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634934724] [2020-10-28 00:43:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:43:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:20,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:20,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 00:43:20,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:43:20,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-28 00:43:20,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:43:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-28 00:43:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:43:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:43:23,164 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:43:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:43:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:23,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:23,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:23,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:43:23,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:43:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:43:23,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:43:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:43:23,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:43:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:43:23,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634934724] [2020-10-28 00:43:23,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:43:23,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:43:23,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567403705] [2020-10-28 00:43:23,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:43:23,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:43:23,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:43:23,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:43:23,280 INFO L87 Difference]: Start difference. First operand 6817 states and 11603 transitions. Second operand 5 states. [2020-10-28 00:43:25,643 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:43:35,033 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:43:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:43:35,943 INFO L93 Difference]: Finished difference Result 24546 states and 41673 transitions. [2020-10-28 00:43:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:43:35,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-28 00:43:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:43:35,996 INFO L225 Difference]: With dead ends: 24546 [2020-10-28 00:43:35,996 INFO L226 Difference]: Without dead ends: 18655 [2020-10-28 00:43:36,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:43:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18655 states. [2020-10-28 00:43:37,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18655 to 12733. [2020-10-28 00:43:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12733 states. [2020-10-28 00:43:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12733 states to 12733 states and 21619 transitions. [2020-10-28 00:43:37,221 INFO L78 Accepts]: Start accepts. Automaton has 12733 states and 21619 transitions. Word has length 222 [2020-10-28 00:43:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:43:37,221 INFO L481 AbstractCegarLoop]: Abstraction has 12733 states and 21619 transitions. [2020-10-28 00:43:37,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:43:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 12733 states and 21619 transitions. [2020-10-28 00:43:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-28 00:43:37,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:43:37,236 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] [2020-10-28 00:43:37,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:43:37,236 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:43:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:43:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash 249986314, now seen corresponding path program 1 times [2020-10-28 00:43:37,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:43:37,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449463898] [2020-10-28 00:43:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:43:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:42,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:42,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 00:43:42,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:43:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 00:43:42,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:43:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 00:43:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:43:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:44,611 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:43:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:43:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:43:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:43:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:43:44,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:43:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:43:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:43:44,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449463898] [2020-10-28 00:43:44,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:43:44,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:43:44,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406275505] [2020-10-28 00:43:44,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:43:44,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:43:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:43:44,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:43:44,713 INFO L87 Difference]: Start difference. First operand 12733 states and 21619 transitions. Second operand 5 states. [2020-10-28 00:43:47,101 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:43:56,500 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 00:43:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:43:58,302 INFO L93 Difference]: Finished difference Result 47986 states and 81337 transitions. [2020-10-28 00:43:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:43:58,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-28 00:43:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:43:58,374 INFO L225 Difference]: With dead ends: 47986 [2020-10-28 00:43:58,375 INFO L226 Difference]: Without dead ends: 36235 [2020-10-28 00:43:58,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:43:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36235 states. [2020-10-28 00:44:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36235 to 24425. [2020-10-28 00:44:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24425 states. [2020-10-28 00:44:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24425 states to 24425 states and 41379 transitions. [2020-10-28 00:44:00,264 INFO L78 Accepts]: Start accepts. Automaton has 24425 states and 41379 transitions. Word has length 223 [2020-10-28 00:44:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:44:00,265 INFO L481 AbstractCegarLoop]: Abstraction has 24425 states and 41379 transitions. [2020-10-28 00:44:00,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:44:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 24425 states and 41379 transitions. [2020-10-28 00:44:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 00:44:00,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:44:00,272 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] [2020-10-28 00:44:00,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:44:00,272 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:44:00,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:44:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash 938281962, now seen corresponding path program 1 times [2020-10-28 00:44:00,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:44:00,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715870859] [2020-10-28 00:44:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:44:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:05,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 00:44:05,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:44:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 00:44:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:44:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-28 00:44:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 00:44:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:44:07,649 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-28 00:44:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:44:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:44:07,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:44:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 00:44:07,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:44:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:44:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:44:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:44:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:44:07,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715870859] [2020-10-28 00:44:07,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:44:07,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:44:07,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228794020] [2020-10-28 00:44:07,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:44:07,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:44:07,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:44:07,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:44:07,785 INFO L87 Difference]: Start difference. First operand 24425 states and 41379 transitions. Second operand 4 states. [2020-10-28 00:44:10,117 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 416 [2020-10-28 00:44:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:44:21,389 INFO L93 Difference]: Finished difference Result 67494 states and 114202 transitions. [2020-10-28 00:44:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:44:21,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2020-10-28 00:44:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:44:21,473 INFO L225 Difference]: With dead ends: 67494 [2020-10-28 00:44:21,473 INFO L226 Difference]: Without dead ends: 43649 [2020-10-28 00:44:21,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:44:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43649 states. [2020-10-28 00:44:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43649 to 43646. [2020-10-28 00:44:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43646 states. [2020-10-28 00:44:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43646 states to 43646 states and 73726 transitions. [2020-10-28 00:44:24,811 INFO L78 Accepts]: Start accepts. Automaton has 43646 states and 73726 transitions. Word has length 224 [2020-10-28 00:44:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:44:24,811 INFO L481 AbstractCegarLoop]: Abstraction has 43646 states and 73726 transitions. [2020-10-28 00:44:24,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:44:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 43646 states and 73726 transitions. [2020-10-28 00:44:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 00:44:24,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:44:24,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:44:24,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:44:24,815 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:44:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:44:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1898014237, now seen corresponding path program 1 times [2020-10-28 00:44:24,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:44:24,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45228955] [2020-10-28 00:44:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:44:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:44:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:44:29,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 00:44:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0