/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:12:22,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:12:22,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:12:22,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:12:22,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:12:22,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:12:22,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:12:22,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:12:22,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:12:22,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:12:22,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:12:22,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:12:22,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:12:22,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:12:22,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:12:22,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:12:22,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:12:22,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:12:22,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:12:22,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:12:22,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:12:22,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:12:22,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:12:22,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:12:22,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:12:22,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:12:22,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:12:22,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:12:22,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:12:22,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:12:22,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:12:22,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:12:22,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:12:22,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:12:22,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:12:22,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:12:22,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:12:22,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:12:22,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:12:22,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:12:22,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:12:22,851 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 19:12:22,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:12:22,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:12:22,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:12:22,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:12:22,922 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:12:22,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:12:22,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:12:22,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:12:22,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:12:22,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:12:22,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:12:22,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:12:22,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:12:22,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:12:22,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:12:22,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:12:22,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:12:22,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:12:22,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:12:22,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:12:22,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:12:22,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:12:22,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:12:22,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:12:22,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:12:22,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:12:22,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:12:22,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:12:22,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:12:22,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:12:23,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:12:23,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:12:23,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:12:23,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:12:23,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:12:23,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:12:23,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d26d2ac0d/b1f54993a49846679e3bb3054aea8252/FLAGbc1cc6891 [2020-10-28 19:12:24,220 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:12:24,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:12:24,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d26d2ac0d/b1f54993a49846679e3bb3054aea8252/FLAGbc1cc6891 [2020-10-28 19:12:24,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d26d2ac0d/b1f54993a49846679e3bb3054aea8252 [2020-10-28 19:12:24,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:12:24,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:12:24,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:12:24,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:12:24,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:12:24,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:12:24" (1/1) ... [2020-10-28 19:12:24,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e930ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:24, skipping insertion in model container [2020-10-28 19:12:24,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:12:24" (1/1) ... [2020-10-28 19:12:24,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:12:24,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:12:25,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:12:25,069 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:12:25,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:12:25,280 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:12:25,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25 WrapperNode [2020-10-28 19:12:25,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:12:25,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:12:25,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:12:25,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:12:25,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (1/1) ... [2020-10-28 19:12:25,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:12:25,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:12:25,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:12:25,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:12:25,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (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 19:12:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:12:25,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:12:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:12:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:12:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:12:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:12:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:12:25,523 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:12:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:12:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:12:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:12:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:12:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:12:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:12:25,526 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:12:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:12:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:12:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:12:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:12:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:12:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:12:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:12:27,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:12:27,094 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:12:27,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:12:27 BoogieIcfgContainer [2020-10-28 19:12:27,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:12:27,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:12:27,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:12:27,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:12:27,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:12:24" (1/3) ... [2020-10-28 19:12:27,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4661c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:12:27, skipping insertion in model container [2020-10-28 19:12:27,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:12:25" (2/3) ... [2020-10-28 19:12:27,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4661c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:12:27, skipping insertion in model container [2020-10-28 19:12:27,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:12:27" (3/3) ... [2020-10-28 19:12:27,107 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:12:27,120 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:12:27,126 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:12:27,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:12:27,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:12:27,170 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:12:27,170 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:12:27,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:12:27,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:12:27,170 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:12:27,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:12:27,171 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:12:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-28 19:12:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:12:27,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:27,224 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] [2020-10-28 19:12:27,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1599261146, now seen corresponding path program 1 times [2020-10-28 19:12:27,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:27,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280712336] [2020-10-28 19:12:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:29,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:32,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:32,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:12:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:32,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 19:12:32,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:32,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 19:12:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 19:12:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 19:12:33,258 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:12:33,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:33,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:33,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:33,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:33,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:33,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 19:12:33,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:33,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:33,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:33,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:33,391 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 19:12:33,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280712336] [2020-10-28 19:12:33,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:33,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:33,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037171800] [2020-10-28 19:12:33,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:33,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:33,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:33,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:33,426 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 4 states. [2020-10-28 19:12:33,888 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:12:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:35,913 INFO L93 Difference]: Finished difference Result 691 states and 1190 transitions. [2020-10-28 19:12:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:12:35,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 19:12:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:35,952 INFO L225 Difference]: With dead ends: 691 [2020-10-28 19:12:35,953 INFO L226 Difference]: Without dead ends: 557 [2020-10-28 19:12:35,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-28 19:12:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2020-10-28 19:12:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-28 19:12:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 829 transitions. [2020-10-28 19:12:36,108 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 829 transitions. Word has length 154 [2020-10-28 19:12:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:36,109 INFO L481 AbstractCegarLoop]: Abstraction has 554 states and 829 transitions. [2020-10-28 19:12:36,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:12:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 829 transitions. [2020-10-28 19:12:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:12:36,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:36,115 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] [2020-10-28 19:12:36,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:12:36,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:36,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2077220115, now seen corresponding path program 1 times [2020-10-28 19:12:36,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:36,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911342370] [2020-10-28 19:12:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:41,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:12:41,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 19:12:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:41,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 19:12:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 19:12:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:41,720 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:12:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:41,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:41,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:12:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:41,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:41,818 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 19:12:41,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911342370] [2020-10-28 19:12:41,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:41,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:41,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835303585] [2020-10-28 19:12:41,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:41,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:41,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:41,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:41,826 INFO L87 Difference]: Start difference. First operand 554 states and 829 transitions. Second operand 4 states. [2020-10-28 19:12:42,183 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:12:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:43,875 INFO L93 Difference]: Finished difference Result 1184 states and 1816 transitions. [2020-10-28 19:12:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:12:43,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 19:12:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:43,884 INFO L225 Difference]: With dead ends: 1184 [2020-10-28 19:12:43,884 INFO L226 Difference]: Without dead ends: 969 [2020-10-28 19:12:43,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:43,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-28 19:12:43,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 966. [2020-10-28 19:12:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-28 19:12:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1457 transitions. [2020-10-28 19:12:43,943 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1457 transitions. Word has length 154 [2020-10-28 19:12:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:43,947 INFO L481 AbstractCegarLoop]: Abstraction has 966 states and 1457 transitions. [2020-10-28 19:12:43,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:12:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1457 transitions. [2020-10-28 19:12:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:12:43,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:43,955 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] [2020-10-28 19:12:43,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:12:43,956 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:43,956 INFO L82 PathProgramCache]: Analyzing trace with hash -238738614, now seen corresponding path program 1 times [2020-10-28 19:12:43,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:43,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797214244] [2020-10-28 19:12:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:46,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:49,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:12:49,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 19:12:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:49,540 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:12:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:49,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:12:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:49,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:49,641 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 19:12:49,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797214244] [2020-10-28 19:12:49,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:49,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:49,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131010507] [2020-10-28 19:12:49,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:49,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:49,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:49,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:49,644 INFO L87 Difference]: Start difference. First operand 966 states and 1457 transitions. Second operand 5 states. [2020-10-28 19:12:51,820 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:12:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:52,991 INFO L93 Difference]: Finished difference Result 2806 states and 4221 transitions. [2020-10-28 19:12:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:12:52,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 19:12:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:53,005 INFO L225 Difference]: With dead ends: 2806 [2020-10-28 19:12:53,008 INFO L226 Difference]: Without dead ends: 1865 [2020-10-28 19:12:53,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:12:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2020-10-28 19:12:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1862. [2020-10-28 19:12:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-10-28 19:12:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2781 transitions. [2020-10-28 19:12:53,134 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2781 transitions. Word has length 154 [2020-10-28 19:12:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:53,134 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 2781 transitions. [2020-10-28 19:12:53,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:12:53,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2781 transitions. [2020-10-28 19:12:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:12:53,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:53,139 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] [2020-10-28 19:12:53,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:12:53,140 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1650128940, now seen corresponding path program 1 times [2020-10-28 19:12:53,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:53,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984236132] [2020-10-28 19:12:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:12:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:12:58,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 19:12:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:12:58,882 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:12:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:58,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:58,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:12:58,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:58,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:58,992 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 19:12:58,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984236132] [2020-10-28 19:12:58,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:58,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:12:58,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625073990] [2020-10-28 19:12:58,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:12:58,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:58,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:12:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:58,995 INFO L87 Difference]: Start difference. First operand 1862 states and 2781 transitions. Second operand 5 states. [2020-10-28 19:13:01,512 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:13:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:02,798 INFO L93 Difference]: Finished difference Result 5411 states and 8052 transitions. [2020-10-28 19:13:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:02,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 19:13:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:02,817 INFO L225 Difference]: With dead ends: 5411 [2020-10-28 19:13:02,818 INFO L226 Difference]: Without dead ends: 3582 [2020-10-28 19:13:02,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2020-10-28 19:13:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3579. [2020-10-28 19:13:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2020-10-28 19:13:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5283 transitions. [2020-10-28 19:13:03,090 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5283 transitions. Word has length 155 [2020-10-28 19:13:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:03,091 INFO L481 AbstractCegarLoop]: Abstraction has 3579 states and 5283 transitions. [2020-10-28 19:13:03,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5283 transitions. [2020-10-28 19:13:03,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:13:03,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:03,099 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] [2020-10-28 19:13:03,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:13:03,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:03,100 INFO L82 PathProgramCache]: Analyzing trace with hash -993848178, now seen corresponding path program 1 times [2020-10-28 19:13:03,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:03,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804809521] [2020-10-28 19:13:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:08,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:08,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 19:13:08,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 19:13:08,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 19:13:08,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:08,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:08,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 19:13:08,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 19:13:08,699 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:13:08,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:08,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:13:08,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:08,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:08,802 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 19:13:08,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804809521] [2020-10-28 19:13:08,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:08,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:08,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352764719] [2020-10-28 19:13:08,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:08,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:08,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:08,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:08,805 INFO L87 Difference]: Start difference. First operand 3579 states and 5283 transitions. Second operand 5 states. [2020-10-28 19:13:11,322 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:13:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:12,659 INFO L93 Difference]: Finished difference Result 9744 states and 14323 transitions. [2020-10-28 19:13:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:12,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 19:13:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:12,693 INFO L225 Difference]: With dead ends: 9744 [2020-10-28 19:13:12,693 INFO L226 Difference]: Without dead ends: 6205 [2020-10-28 19:13:12,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2020-10-28 19:13:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 6202. [2020-10-28 19:13:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6202 states. [2020-10-28 19:13:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 9026 transitions. [2020-10-28 19:13:13,074 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 9026 transitions. Word has length 156 [2020-10-28 19:13:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:13,074 INFO L481 AbstractCegarLoop]: Abstraction has 6202 states and 9026 transitions. [2020-10-28 19:13:13,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 9026 transitions. [2020-10-28 19:13:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:13:13,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:13,086 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] [2020-10-28 19:13:13,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:13:13,086 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash -859783725, now seen corresponding path program 1 times [2020-10-28 19:13:13,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:13,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82222108] [2020-10-28 19:13:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:13,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:13,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:18,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:13:18,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:13:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:13:18,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:18,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 19:13:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:18,608 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:13:18,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:18,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:18,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:18,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:13:18,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:18,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:18,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:13:18,724 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 19:13:18,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82222108] [2020-10-28 19:13:18,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:18,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:18,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221108857] [2020-10-28 19:13:18,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:18,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:18,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:18,728 INFO L87 Difference]: Start difference. First operand 6202 states and 9026 transitions. Second operand 5 states. [2020-10-28 19:13:21,406 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:13:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:22,879 INFO L93 Difference]: Finished difference Result 17580 states and 25566 transitions. [2020-10-28 19:13:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:22,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:13:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:22,972 INFO L225 Difference]: With dead ends: 17580 [2020-10-28 19:13:22,972 INFO L226 Difference]: Without dead ends: 11968 [2020-10-28 19:13:22,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11968 states. [2020-10-28 19:13:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11968 to 11965. [2020-10-28 19:13:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11965 states. [2020-10-28 19:13:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 17197 transitions. [2020-10-28 19:13:23,840 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 17197 transitions. Word has length 157 [2020-10-28 19:13:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:23,840 INFO L481 AbstractCegarLoop]: Abstraction has 11965 states and 17197 transitions. [2020-10-28 19:13:23,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 17197 transitions. [2020-10-28 19:13:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:13:23,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:23,860 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] [2020-10-28 19:13:23,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:13:23,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash 791837900, now seen corresponding path program 1 times [2020-10-28 19:13:23,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:23,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78966762] [2020-10-28 19:13:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:26,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:13:26,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:13:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3079 [2020-10-28 19:13:26,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:26,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 19:13:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:27,456 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:13:27,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:27,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:27,576 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 19:13:27,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78966762] [2020-10-28 19:13:27,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:27,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:27,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620474526] [2020-10-28 19:13:27,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:27,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:27,578 INFO L87 Difference]: Start difference. First operand 11965 states and 17197 transitions. Second operand 5 states. [2020-10-28 19:13:30,461 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:13:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:32,154 INFO L93 Difference]: Finished difference Result 31736 states and 45502 transitions. [2020-10-28 19:13:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:32,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 19:13:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:32,203 INFO L225 Difference]: With dead ends: 31736 [2020-10-28 19:13:32,203 INFO L226 Difference]: Without dead ends: 20755 [2020-10-28 19:13:32,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20755 states. [2020-10-28 19:13:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20755 to 20752. [2020-10-28 19:13:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20752 states. [2020-10-28 19:13:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20752 states to 20752 states and 29302 transitions. [2020-10-28 19:13:33,833 INFO L78 Accepts]: Start accepts. Automaton has 20752 states and 29302 transitions. Word has length 158 [2020-10-28 19:13:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:33,833 INFO L481 AbstractCegarLoop]: Abstraction has 20752 states and 29302 transitions. [2020-10-28 19:13:33,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 20752 states and 29302 transitions. [2020-10-28 19:13:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 19:13:33,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:33,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:13:33,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:13:33,868 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1132738830, now seen corresponding path program 1 times [2020-10-28 19:13:33,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:33,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238618415] [2020-10-28 19:13:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:33,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:34,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:34,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 19:13:34,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 19:13:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:35,339 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:13:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:35,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:13:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:35,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:35,447 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 19:13:35,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238618415] [2020-10-28 19:13:35,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:35,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:35,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377701975] [2020-10-28 19:13:35,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:35,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:35,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:35,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:35,457 INFO L87 Difference]: Start difference. First operand 20752 states and 29302 transitions. Second operand 5 states. [2020-10-28 19:13:38,728 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:13:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:40,747 INFO L93 Difference]: Finished difference Result 60444 states and 84983 transitions. [2020-10-28 19:13:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:40,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 19:13:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:40,843 INFO L225 Difference]: With dead ends: 60444 [2020-10-28 19:13:40,843 INFO L226 Difference]: Without dead ends: 40034 [2020-10-28 19:13:40,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40034 states. [2020-10-28 19:13:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40034 to 40031. [2020-10-28 19:13:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40031 states. [2020-10-28 19:13:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40031 states to 40031 states and 55682 transitions. [2020-10-28 19:13:43,723 INFO L78 Accepts]: Start accepts. Automaton has 40031 states and 55682 transitions. Word has length 159 [2020-10-28 19:13:43,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:43,723 INFO L481 AbstractCegarLoop]: Abstraction has 40031 states and 55682 transitions. [2020-10-28 19:13:43,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:43,723 INFO L276 IsEmpty]: Start isEmpty. Operand 40031 states and 55682 transitions. [2020-10-28 19:13:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:13:43,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:43,765 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] [2020-10-28 19:13:43,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:13:43,765 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:43,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2127015123, now seen corresponding path program 1 times [2020-10-28 19:13:43,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:43,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461801596] [2020-10-28 19:13:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 19:13:43,815 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 19:13:43,815 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 19:13:43,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:13:43,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 07:13:43 BoogieIcfgContainer [2020-10-28 19:13:43,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 19:13:43,880 INFO L168 Benchmark]: Toolchain (without parser) took 79460.89 ms. Allocated memory was 158.3 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 137.6 MB in the beginning and 1.0 GB in the end (delta: -872.0 MB). Peak memory consumption was 867.0 MB. Max. memory is 8.0 GB. [2020-10-28 19:13:43,881 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 158.3 MB. Free memory was 129.9 MB in the beginning and 129.8 MB in the end (delta: 72.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 19:13:43,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 853.42 ms. Allocated memory is still 158.3 MB. Free memory was 137.0 MB in the beginning and 131.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. [2020-10-28 19:13:43,882 INFO L168 Benchmark]: Boogie Preprocessor took 142.80 ms. Allocated memory is still 158.3 MB. Free memory was 131.2 MB in the beginning and 127.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 19:13:43,883 INFO L168 Benchmark]: RCFGBuilder took 1669.95 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 127.0 MB in the beginning and 138.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. [2020-10-28 19:13:43,884 INFO L168 Benchmark]: TraceAbstraction took 76779.37 ms. Allocated memory was 190.8 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 138.0 MB in the beginning and 1.0 GB in the end (delta: -871.6 MB). Peak memory consumption was 835.5 MB. Max. memory is 8.0 GB. [2020-10-28 19:13:43,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 158.3 MB. Free memory was 129.9 MB in the beginning and 129.8 MB in the end (delta: 72.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 853.42 ms. Allocated memory is still 158.3 MB. Free memory was 137.0 MB in the beginning and 131.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.80 ms. Allocated memory is still 158.3 MB. Free memory was 131.2 MB in the beginning and 127.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1669.95 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 127.0 MB in the beginning and 138.5 MB in the end (delta: -11.5 MB). Peak memory consumption was 62.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76779.37 ms. Allocated memory was 190.8 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 138.0 MB in the beginning and 1.0 GB in the end (delta: -871.6 MB). Peak memory consumption was 835.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] _Bool newmax1 = 0; [L50] char id2 = '\x0'; [L51] unsigned char r2 = '\x0'; [L52] char st2 = '\x0'; [L53] char nl2 = '\x0'; [L54] char m2 = '\x0'; [L55] char max2 = '\x0'; [L56] _Bool mode2 = 0; [L57] _Bool newmax2 = 0; [L58] char id3 = '\x0'; [L59] unsigned char r3 = '\x0'; [L60] char st3 = '\x0'; [L61] char nl3 = '\x0'; [L62] char m3 = '\x0'; [L63] char max3 = '\x0'; [L64] _Bool mode3 = 0; [L65] _Bool newmax3 = 0; [L69] void (*nodes[3])() = { &node1, &node2, &node3 }; [L73] int __return_1873; [L74] int __return_2019; [L75] int __return_2152; [L76] int __return_2288; [L77] int __return_2426; [L78] int __return_2551; [L81] int main__c1; [L82] int main__i2; [L83] main__c1 = 0 [L84] ep12 = __VERIFIER_nondet_bool() [L85] ep13 = __VERIFIER_nondet_bool() [L86] ep21 = __VERIFIER_nondet_bool() [L87] ep23 = __VERIFIER_nondet_bool() [L88] ep31 = __VERIFIER_nondet_bool() [L89] ep32 = __VERIFIER_nondet_bool() [L90] id1 = __VERIFIER_nondet_char() [L91] r1 = __VERIFIER_nondet_uchar() [L92] st1 = __VERIFIER_nondet_char() [L93] nl1 = __VERIFIER_nondet_char() [L94] m1 = __VERIFIER_nondet_char() [L95] max1 = __VERIFIER_nondet_char() [L96] mode1 = __VERIFIER_nondet_bool() [L97] newmax1 = __VERIFIER_nondet_bool() [L98] id2 = __VERIFIER_nondet_char() [L99] r2 = __VERIFIER_nondet_uchar() [L100] st2 = __VERIFIER_nondet_char() [L101] nl2 = __VERIFIER_nondet_char() [L102] m2 = __VERIFIER_nondet_char() [L103] max2 = __VERIFIER_nondet_char() [L104] mode2 = __VERIFIER_nondet_bool() [L105] newmax2 = __VERIFIER_nondet_bool() [L106] id3 = __VERIFIER_nondet_char() [L107] r3 = __VERIFIER_nondet_uchar() [L108] st3 = __VERIFIER_nondet_char() [L109] nl3 = __VERIFIER_nondet_char() [L110] m3 = __VERIFIER_nondet_char() [L111] max3 = __VERIFIER_nondet_char() [L112] mode3 = __VERIFIER_nondet_bool() [L113] newmax3 = __VERIFIER_nondet_bool() [L115] _Bool init__r121; [L116] _Bool init__r131; [L117] _Bool init__r211; [L118] _Bool init__r231; [L119] _Bool init__r311; [L120] _Bool init__r321; [L121] _Bool init__r122; [L122] int init__tmp; [L123] _Bool init__r132; [L124] int init__tmp___0; [L125] _Bool init__r212; [L126] int init__tmp___1; [L127] _Bool init__r232; [L128] int init__tmp___2; [L129] _Bool init__r312; [L130] int init__tmp___3; [L131] _Bool init__r322; [L132] int init__tmp___4; [L133] int init__tmp___5; [L134] init__r121 = ep12 [L135] init__r131 = ep13 [L136] init__r211 = ep21 [L137] init__r231 = ep23 [L138] init__r311 = ep31 [L139] init__r321 = ep32 [L140] COND FALSE !(!(init__r121 == 0)) [L2456] COND FALSE !(!(init__r131 == 0)) [L2472] init__tmp = 0 [L144] init__r122 = (_Bool)init__tmp [L145] COND FALSE !(!(init__r131 == 0)) [L2433] COND FALSE !(!(init__r121 == 0)) [L2449] init__tmp___0 = 0 [L149] init__r132 = (_Bool)init__tmp___0 [L150] COND FALSE !(!(init__r211 == 0)) [L2410] COND FALSE !(!(init__r231 == 0)) [L2426] init__tmp___1 = 0 [L154] init__r212 = (_Bool)init__tmp___1 [L155] COND FALSE !(!(init__r231 == 0)) [L2387] COND FALSE !(!(init__r211 == 0)) [L2403] init__tmp___2 = 0 [L159] init__r232 = (_Bool)init__tmp___2 [L160] COND FALSE !(!(init__r311 == 0)) [L2364] COND FALSE !(!(init__r321 == 0)) [L2380] init__tmp___3 = 0 [L164] init__r312 = (_Bool)init__tmp___3 [L165] COND FALSE !(!(init__r321 == 0)) [L2341] COND FALSE !(!(init__r311 == 0)) [L2357] init__tmp___4 = 0 [L169] init__r322 = (_Bool)init__tmp___4 [L170] COND TRUE ((int)id1) != ((int)id2) [L172] COND TRUE ((int)id1) != ((int)id3) [L174] COND TRUE ((int)id2) != ((int)id3) [L176] COND TRUE ((int)id1) >= 0 [L178] COND TRUE ((int)id2) >= 0 [L180] COND TRUE ((int)id3) >= 0 [L182] COND TRUE ((int)r1) == 0 [L184] COND TRUE ((int)r2) == 0 [L186] COND TRUE ((int)r3) == 0 [L188] COND TRUE ((int)max1) == ((int)id1) [L190] COND TRUE ((int)max2) == ((int)id2) [L192] COND TRUE ((int)max3) == ((int)id3) [L194] COND TRUE ((int)st1) == 0 [L196] COND TRUE ((int)st2) == 0 [L198] COND TRUE ((int)st3) == 0 [L200] COND TRUE ((int)nl1) == 0 [L202] COND TRUE ((int)nl2) == 0 [L204] COND TRUE ((int)nl3) == 0 [L206] COND TRUE ((int)mode1) == 0 [L208] COND TRUE ((int)mode2) == 0 [L210] COND TRUE ((int)mode3) == 0 [L212] COND TRUE !(newmax1 == 0) [L214] COND TRUE !(newmax2 == 0) [L216] COND TRUE !(newmax3 == 0) [L218] init__tmp___5 = 1 [L219] __return_1873 = init__tmp___5 [L220] main__i2 = __return_1873 [L221] COND TRUE main__i2 != 0 [L223] p12_old = nomsg [L224] p12_new = nomsg [L225] p13_old = nomsg [L226] p13_new = nomsg [L227] p21_old = nomsg [L228] p21_new = nomsg [L229] p23_old = nomsg [L230] p23_new = nomsg [L231] p31_old = nomsg [L232] p31_new = nomsg [L233] p32_old = nomsg [L234] p32_new = nomsg [L235] main__i2 = 0 [L237] _Bool node1__newmax; [L238] node1__newmax = 0 [L239] COND FALSE !(!(mode1 == 0)) [L245] COND TRUE ((int)r1) < 2 [L247] COND FALSE !(!(ep12 == 0)) [L260] COND FALSE !(!(ep13 == 0)) [L273] mode1 = 1 [L275] _Bool node2__newmax; [L276] node2__newmax = 0 [L277] COND FALSE !(!(mode2 == 0)) [L283] COND TRUE ((int)r2) < 2 [L285] COND FALSE !(!(ep21 == 0)) [L298] COND FALSE !(!(ep23 == 0)) [L311] mode2 = 1 [L313] _Bool node3__newmax; [L314] node3__newmax = 0 [L315] COND FALSE !(!(mode3 == 0)) [L321] COND TRUE ((int)r3) < 2 [L323] COND FALSE !(!(ep31 == 0)) [L336] COND FALSE !(!(ep32 == 0)) [L349] mode3 = 1 [L350] p12_old = p12_new [L351] p12_new = nomsg [L352] p13_old = p13_new [L353] p13_new = nomsg [L354] p21_old = p21_new [L355] p21_new = nomsg [L356] p23_old = p23_new [L357] p23_new = nomsg [L358] p31_old = p31_new [L359] p31_new = nomsg [L360] p32_old = p32_new [L361] p32_new = nomsg [L363] int check__tmp; [L364] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L366] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L368] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L370] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L372] COND FALSE !(((int)r1) >= 2) [L378] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L380] COND TRUE ((int)r1) < 2 [L382] COND FALSE !(((int)r1) >= 2) [L388] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L390] COND TRUE ((int)r1) < 2 [L392] check__tmp = 1 [L393] __return_2019 = check__tmp [L394] main__c1 = __return_2019 [L396] _Bool __tmp_1; [L397] __tmp_1 = main__c1 [L398] _Bool assert__arg; [L399] assert__arg = __tmp_1 [L400] COND FALSE !(assert__arg == 0) [L407] _Bool node1__newmax; [L408] node1__newmax = 0 [L409] COND TRUE !(mode1 == 0) [L411] COND FALSE !(r1 == 255) [L417] r1 = r1 + 1 [L418] COND FALSE !(!(ep21 == 0)) [L427] COND FALSE !(!(ep31 == 0)) [L436] newmax1 = node1__newmax [L437] COND FALSE !(((int)r1) == 2) [L443] mode1 = 0 [L445] _Bool node2__newmax; [L446] node2__newmax = 0 [L447] COND TRUE !(mode2 == 0) [L449] COND FALSE !(r2 == 255) [L455] r2 = r2 + 1 [L456] COND FALSE !(!(ep12 == 0)) [L465] COND FALSE !(!(ep32 == 0)) [L474] newmax2 = node2__newmax [L475] COND FALSE !(((int)r2) == 2) [L481] mode2 = 0 [L483] _Bool node3__newmax; [L484] node3__newmax = 0 [L485] COND TRUE !(mode3 == 0) [L487] COND FALSE !(r3 == 255) [L493] r3 = r3 + 1 [L494] COND FALSE !(!(ep13 == 0)) [L503] COND FALSE !(!(ep23 == 0)) [L512] newmax3 = node3__newmax [L513] COND FALSE !(((int)r3) == 2) [L519] mode3 = 0 [L520] p12_old = p12_new [L521] p12_new = nomsg [L522] p13_old = p13_new [L523] p13_new = nomsg [L524] p21_old = p21_new [L525] p21_new = nomsg [L526] p23_old = p23_new [L527] p23_new = nomsg [L528] p31_old = p31_new [L529] p31_new = nomsg [L530] p32_old = p32_new [L531] p32_new = nomsg [L533] int check__tmp; [L534] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L536] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L538] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L540] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L542] COND FALSE !(((int)r1) >= 2) [L548] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L550] COND TRUE ((int)r1) < 2 [L552] COND FALSE !(((int)r1) >= 2) [L558] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L560] COND TRUE ((int)r1) < 2 [L562] check__tmp = 1 [L563] __return_2152 = check__tmp [L564] main__c1 = __return_2152 [L566] _Bool __tmp_2; [L567] __tmp_2 = main__c1 [L568] _Bool assert__arg; [L569] assert__arg = __tmp_2 [L570] COND FALSE !(assert__arg == 0) [L577] _Bool node1__newmax; [L578] node1__newmax = 0 [L579] COND FALSE !(!(mode1 == 0)) [L585] COND TRUE ((int)r1) < 2 [L587] COND FALSE !(!(ep12 == 0)) [L600] COND FALSE !(!(ep13 == 0)) [L613] mode1 = 1 [L615] _Bool node2__newmax; [L616] node2__newmax = 0 [L617] COND FALSE !(!(mode2 == 0)) [L623] COND TRUE ((int)r2) < 2 [L625] COND FALSE !(!(ep21 == 0)) [L638] COND FALSE !(!(ep23 == 0)) [L651] mode2 = 1 [L653] _Bool node3__newmax; [L654] node3__newmax = 0 [L655] COND FALSE !(!(mode3 == 0)) [L661] COND TRUE ((int)r3) < 2 [L663] COND FALSE !(!(ep31 == 0)) [L676] COND FALSE !(!(ep32 == 0)) [L689] mode3 = 1 [L690] p12_old = p12_new [L691] p12_new = nomsg [L692] p13_old = p13_new [L693] p13_new = nomsg [L694] p21_old = p21_new [L695] p21_new = nomsg [L696] p23_old = p23_new [L697] p23_new = nomsg [L698] p31_old = p31_new [L699] p31_new = nomsg [L700] p32_old = p32_new [L701] p32_new = nomsg [L703] int check__tmp; [L704] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L706] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L708] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L710] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L712] COND FALSE !(((int)r1) >= 2) [L718] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L720] COND TRUE ((int)r1) < 2 [L722] COND FALSE !(((int)r1) >= 2) [L728] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L730] COND TRUE ((int)r1) < 2 [L732] check__tmp = 1 [L733] __return_2288 = check__tmp [L734] main__c1 = __return_2288 [L736] _Bool __tmp_3; [L737] __tmp_3 = main__c1 [L738] _Bool assert__arg; [L739] assert__arg = __tmp_3 [L740] COND FALSE !(assert__arg == 0) [L747] _Bool node1__newmax; [L748] node1__newmax = 0 [L749] COND TRUE !(mode1 == 0) [L751] COND FALSE !(r1 == 255) [L757] r1 = r1 + 1 [L758] COND FALSE !(!(ep21 == 0)) [L767] COND FALSE !(!(ep31 == 0)) [L776] newmax1 = node1__newmax [L777] COND TRUE ((int)r1) == 2 [L779] COND TRUE ((int)max1) == ((int)id1) [L781] st1 = 1 [L783] mode1 = 0 [L785] _Bool node2__newmax; [L786] node2__newmax = 0 [L787] COND TRUE !(mode2 == 0) [L789] COND FALSE !(r2 == 255) [L795] r2 = r2 + 1 [L796] COND FALSE !(!(ep12 == 0)) [L805] COND FALSE !(!(ep32 == 0)) [L814] newmax2 = node2__newmax [L815] COND TRUE ((int)r2) == 2 [L817] COND TRUE ((int)max2) == ((int)id2) [L819] st2 = 1 [L821] mode2 = 0 [L823] _Bool node3__newmax; [L824] node3__newmax = 0 [L825] COND TRUE !(mode3 == 0) [L827] COND FALSE !(r3 == 255) [L833] r3 = r3 + 1 [L834] COND FALSE !(!(ep13 == 0)) [L843] COND FALSE !(!(ep23 == 0)) [L852] newmax3 = node3__newmax [L853] COND TRUE ((int)r3) == 2 [L855] COND TRUE ((int)max3) == ((int)id3) [L857] st3 = 1 [L859] mode3 = 0 [L860] p12_old = p12_new [L861] p12_new = nomsg [L862] p13_old = p13_new [L863] p13_new = nomsg [L864] p21_old = p21_new [L865] p21_new = nomsg [L866] p23_old = p23_new [L867] p23_new = nomsg [L868] p31_old = p31_new [L869] p31_new = nomsg [L870] p32_old = p32_new [L871] p32_new = nomsg [L873] int check__tmp; [L874] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1570] check__tmp = 0 [L902] __return_2426 = check__tmp [L903] main__c1 = __return_2426 [L906] _Bool __tmp_4; [L907] __tmp_4 = main__c1 [L908] _Bool assert__arg; [L909] assert__arg = __tmp_4 [L910] COND TRUE assert__arg == 0 [L912] CALL reach_error() [L4] __assert_fail("0", "pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 351 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 30.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5902 SDtfs, 6499 SDslu, 3482 SDs, 0 SdLazy, 6445 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40031occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.6s InterpolantComputationTime, 1407 NumberOfCodeBlocks, 1407 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1239 ConstructedInterpolants, 0 QuantifiedInterpolants, 1437685 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...