/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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:08:37,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:08:37,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:08:37,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:08:37,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:08:37,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:08:37,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:08:37,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:08:37,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:08:37,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:08:37,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:08:37,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:08:37,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:08:37,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:08:37,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:08:37,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:08:37,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:08:37,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:08:37,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:08:37,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:08:37,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:08:37,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:08:37,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:08:37,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:08:37,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:08:37,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:08:37,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:08:37,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:08:37,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:08:37,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:08:37,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:08:37,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:08:37,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:08:37,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:08:37,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:08:37,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:08:37,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:08:37,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:08:37,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:08:37,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:08:37,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:08:37,399 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 18:08:37,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:08:37,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:08:37,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:08:37,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:08:37,439 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:08:37,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:08:37,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:08:37,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:08:37,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:08:37,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:08:37,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:08:37,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:08:37,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:08:37,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:08:37,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:08:37,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:08:37,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:08:37,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:08:37,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:08:37,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:08:37,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:08:37,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:08:37,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:08:37,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:08:37,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:08:37,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:08:37,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:08:37,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:08:37,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:08:37,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:08:37,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:08:37,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:08:37,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:08:37,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:08:37,900 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:08:37,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 18:08:37,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0112d444/499ac18e1db4410a8cc21ac1475f8952/FLAG9decef2a6 [2020-10-28 18:08:38,662 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:08:38,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 18:08:38,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0112d444/499ac18e1db4410a8cc21ac1475f8952/FLAG9decef2a6 [2020-10-28 18:08:38,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0112d444/499ac18e1db4410a8cc21ac1475f8952 [2020-10-28 18:08:38,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:08:38,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:08:38,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:08:38,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:08:38,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:08:38,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:08:38" (1/1) ... [2020-10-28 18:08:38,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aab947b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:38, skipping insertion in model container [2020-10-28 18:08:38,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:08:38" (1/1) ... [2020-10-28 18:08:38,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:08:39,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:08:39,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:08:39,571 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:08:39,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:08:39,749 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:08:39,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39 WrapperNode [2020-10-28 18:08:39,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:08:39,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:08:39,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:08:39,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:08:39,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (1/1) ... [2020-10-28 18:08:39,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:08:39,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:08:39,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:08:39,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:08:39,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (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 18:08:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:08:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:08:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:08:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:08:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:08:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:08:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:08:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:08:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:08:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:08:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:08:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:08:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:08:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:08:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:08:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:08:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:08:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:08:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:08:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:08:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:08:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:08:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:08:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:08:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:08:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:08:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:08:41,349 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:08:41,350 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:08:41,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:08:41 BoogieIcfgContainer [2020-10-28 18:08:41,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:08:41,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:08:41,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:08:41,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:08:41,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:08:38" (1/3) ... [2020-10-28 18:08:41,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2389fc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:08:41, skipping insertion in model container [2020-10-28 18:08:41,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:08:39" (2/3) ... [2020-10-28 18:08:41,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2389fc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:08:41, skipping insertion in model container [2020-10-28 18:08:41,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:08:41" (3/3) ... [2020-10-28 18:08:41,362 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 18:08:41,374 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:08:41,380 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:08:41,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:08:41,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:08:41,432 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:08:41,432 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:08:41,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:08:41,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:08:41,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:08:41,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:08:41,433 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:08:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-10-28 18:08:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 18:08:41,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:08:41,477 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] [2020-10-28 18:08:41,477 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:08:41,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:08:41,484 INFO L82 PathProgramCache]: Analyzing trace with hash -450222276, now seen corresponding path program 1 times [2020-10-28 18:08:41,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:08:41,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210152517] [2020-10-28 18:08:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:08:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:08:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:08:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 18:08:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:08:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 18:08:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:08:46,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:08:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:08:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:08:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:08:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:08:47,574 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:08:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:08:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:08:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:47,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:08:47,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:08:47,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:08:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 18:08:47,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:08:47,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:08:47,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:08:47,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:08:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:08:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:08:47,718 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 18:08:47,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210152517] [2020-10-28 18:08:47,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:08:47,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:08:47,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949096819] [2020-10-28 18:08:47,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:08:47,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:08:47,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:08:47,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:08:47,757 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 4 states. [2020-10-28 18:08:48,172 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 18:08:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:08:50,441 INFO L93 Difference]: Finished difference Result 605 states and 1054 transitions. [2020-10-28 18:08:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:08:50,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-28 18:08:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:08:50,465 INFO L225 Difference]: With dead ends: 605 [2020-10-28 18:08:50,466 INFO L226 Difference]: Without dead ends: 489 [2020-10-28 18:08:50,470 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 18:08:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-28 18:08:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2020-10-28 18:08:50,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-28 18:08:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 725 transitions. [2020-10-28 18:08:50,566 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 725 transitions. Word has length 143 [2020-10-28 18:08:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:08:50,567 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 725 transitions. [2020-10-28 18:08:50,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:08:50,567 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 725 transitions. [2020-10-28 18:08:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 18:08:50,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:08:50,575 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] [2020-10-28 18:08:50,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:08:50,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:08:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:08:50,579 INFO L82 PathProgramCache]: Analyzing trace with hash -2103345622, now seen corresponding path program 1 times [2020-10-28 18:08:50,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:08:50,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006286965] [2020-10-28 18:08:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:08:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:08:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:08:55,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 18:08:55,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:08:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:08:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:08:55,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:08:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:08:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 18:08:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:08:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:08:56,096 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:08:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:08:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:08:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:56,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:08:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:08:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:08:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:08:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:08:56,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:08:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:08:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:08:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:08:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:08:56,211 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 18:08:56,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006286965] [2020-10-28 18:08:56,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:08:56,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:08:56,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067692826] [2020-10-28 18:08:56,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:08:56,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:08:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:08:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:08:56,219 INFO L87 Difference]: Start difference. First operand 486 states and 725 transitions. Second operand 4 states. [2020-10-28 18:08:56,610 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 18:08:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:08:58,249 INFO L93 Difference]: Finished difference Result 1030 states and 1578 transitions. [2020-10-28 18:08:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:08:58,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-10-28 18:08:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:08:58,266 INFO L225 Difference]: With dead ends: 1030 [2020-10-28 18:08:58,266 INFO L226 Difference]: Without dead ends: 847 [2020-10-28 18:08:58,271 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 18:08:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-28 18:08:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2020-10-28 18:08:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-28 18:08:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1269 transitions. [2020-10-28 18:08:58,371 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1269 transitions. Word has length 143 [2020-10-28 18:08:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:08:58,373 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1269 transitions. [2020-10-28 18:08:58,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:08:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1269 transitions. [2020-10-28 18:08:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 18:08:58,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:08:58,385 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] [2020-10-28 18:08:58,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:08:58,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:08:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:08:58,389 INFO L82 PathProgramCache]: Analyzing trace with hash 166960083, now seen corresponding path program 1 times [2020-10-28 18:08:58,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:08:58,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889103450] [2020-10-28 18:08:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:08:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:08:58,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:08:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:00,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:03,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:03,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 18:09:03,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:09:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:09:03,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:03,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 18:09:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:04,047 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:09:04,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:04,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:04,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:04,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:09:04,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:04,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:04,135 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 18:09:04,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889103450] [2020-10-28 18:09:04,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:04,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:04,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698256572] [2020-10-28 18:09:04,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:04,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:04,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:04,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:04,142 INFO L87 Difference]: Start difference. First operand 844 states and 1269 transitions. Second operand 5 states. [2020-10-28 18:09:06,303 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:09:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:07,345 INFO L93 Difference]: Finished difference Result 2451 states and 3678 transitions. [2020-10-28 18:09:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:07,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-28 18:09:07,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:07,358 INFO L225 Difference]: With dead ends: 2451 [2020-10-28 18:09:07,359 INFO L226 Difference]: Without dead ends: 1624 [2020-10-28 18:09:07,366 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 18:09:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-28 18:09:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1621. [2020-10-28 18:09:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2020-10-28 18:09:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2410 transitions. [2020-10-28 18:09:07,466 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2410 transitions. Word has length 143 [2020-10-28 18:09:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:07,466 INFO L481 AbstractCegarLoop]: Abstraction has 1621 states and 2410 transitions. [2020-10-28 18:09:07,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:07,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2410 transitions. [2020-10-28 18:09:07,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:09:07,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:07,471 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] [2020-10-28 18:09:07,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:09:07,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:07,472 INFO L82 PathProgramCache]: Analyzing trace with hash 400749983, now seen corresponding path program 1 times [2020-10-28 18:09:07,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:07,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21799225] [2020-10-28 18:09:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:07,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:08,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:09,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:12,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:12,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:09:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:09:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:09:12,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:12,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:12,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:12,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:09:12,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:12,989 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:09:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:13,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:13,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:09:13,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:13,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:13,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:09:13,075 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 18:09:13,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21799225] [2020-10-28 18:09:13,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:13,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:13,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653948862] [2020-10-28 18:09:13,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:13,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:13,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:13,077 INFO L87 Difference]: Start difference. First operand 1621 states and 2410 transitions. Second operand 5 states. [2020-10-28 18:09:15,307 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:09:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:16,280 INFO L93 Difference]: Finished difference Result 4722 states and 7008 transitions. [2020-10-28 18:09:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:16,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-28 18:09:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:16,302 INFO L225 Difference]: With dead ends: 4722 [2020-10-28 18:09:16,302 INFO L226 Difference]: Without dead ends: 3131 [2020-10-28 18:09:16,307 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 18:09:16,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2020-10-28 18:09:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3128. [2020-10-28 18:09:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2020-10-28 18:09:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4603 transitions. [2020-10-28 18:09:16,470 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4603 transitions. Word has length 144 [2020-10-28 18:09:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:16,470 INFO L481 AbstractCegarLoop]: Abstraction has 3128 states and 4603 transitions. [2020-10-28 18:09:16,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4603 transitions. [2020-10-28 18:09:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 18:09:16,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:16,477 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] [2020-10-28 18:09:16,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:09:16,478 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 175104530, now seen corresponding path program 1 times [2020-10-28 18:09:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:16,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121271694] [2020-10-28 18:09:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:16,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:21,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:21,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 18:09:21,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:09:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:09:21,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:21,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 18:09:21,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:09:22,082 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:09:22,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:22,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:09:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:22,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:09:22,194 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 18:09:22,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121271694] [2020-10-28 18:09:22,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:22,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:22,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904829238] [2020-10-28 18:09:22,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:22,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:22,197 INFO L87 Difference]: Start difference. First operand 3128 states and 4603 transitions. Second operand 5 states. [2020-10-28 18:09:24,613 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:09:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:25,810 INFO L93 Difference]: Finished difference Result 8892 states and 13104 transitions. [2020-10-28 18:09:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:25,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-28 18:09:25,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:25,842 INFO L225 Difference]: With dead ends: 8892 [2020-10-28 18:09:25,842 INFO L226 Difference]: Without dead ends: 6059 [2020-10-28 18:09:25,850 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 18:09:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2020-10-28 18:09:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 6056. [2020-10-28 18:09:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6056 states. [2020-10-28 18:09:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 8814 transitions. [2020-10-28 18:09:26,254 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 8814 transitions. Word has length 145 [2020-10-28 18:09:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:26,255 INFO L481 AbstractCegarLoop]: Abstraction has 6056 states and 8814 transitions. [2020-10-28 18:09:26,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 8814 transitions. [2020-10-28 18:09:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:09:26,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:26,265 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] [2020-10-28 18:09:26,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:09:26,265 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:26,266 INFO L82 PathProgramCache]: Analyzing trace with hash 781700030, now seen corresponding path program 1 times [2020-10-28 18:09:26,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:26,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787305111] [2020-10-28 18:09:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:27,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:31,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:31,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:09:31,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:09:31,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:09:31,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:31,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 18:09:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:31,840 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:09:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:09:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:31,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:31,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:09:31,942 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 18:09:31,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787305111] [2020-10-28 18:09:31,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:31,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:31,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066238863] [2020-10-28 18:09:31,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:31,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:31,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:31,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:31,945 INFO L87 Difference]: Start difference. First operand 6056 states and 8814 transitions. Second operand 5 states. [2020-10-28 18:09:34,572 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:09:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:36,019 INFO L93 Difference]: Finished difference Result 16243 states and 23594 transitions. [2020-10-28 18:09:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:36,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 18:09:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:36,065 INFO L225 Difference]: With dead ends: 16243 [2020-10-28 18:09:36,066 INFO L226 Difference]: Without dead ends: 10501 [2020-10-28 18:09:36,080 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 18:09:36,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2020-10-28 18:09:36,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 10498. [2020-10-28 18:09:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10498 states. [2020-10-28 18:09:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10498 states to 10498 states and 15031 transitions. [2020-10-28 18:09:36,913 INFO L78 Accepts]: Start accepts. Automaton has 10498 states and 15031 transitions. Word has length 146 [2020-10-28 18:09:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:36,913 INFO L481 AbstractCegarLoop]: Abstraction has 10498 states and 15031 transitions. [2020-10-28 18:09:36,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10498 states and 15031 transitions. [2020-10-28 18:09:36,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 18:09:36,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:36,932 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] [2020-10-28 18:09:36,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:09:36,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1193046864, now seen corresponding path program 1 times [2020-10-28 18:09:36,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:36,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501603799] [2020-10-28 18:09:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 18:09:41,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:09:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4668 [2020-10-28 18:09:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:41,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 18:09:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:09:42,069 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:09:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:09:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:42,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:09:42,157 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 18:09:42,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501603799] [2020-10-28 18:09:42,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:42,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:42,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051828721] [2020-10-28 18:09:42,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:42,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:42,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:42,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:42,159 INFO L87 Difference]: Start difference. First operand 10498 states and 15031 transitions. Second operand 5 states. [2020-10-28 18:09:45,078 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:09:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:46,728 INFO L93 Difference]: Finished difference Result 28560 states and 40690 transitions. [2020-10-28 18:09:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:46,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 18:09:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:46,777 INFO L225 Difference]: With dead ends: 28560 [2020-10-28 18:09:46,778 INFO L226 Difference]: Without dead ends: 18245 [2020-10-28 18:09:46,801 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 18:09:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18245 states. [2020-10-28 18:09:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18245 to 18242. [2020-10-28 18:09:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18242 states. [2020-10-28 18:09:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18242 states to 18242 states and 25678 transitions. [2020-10-28 18:09:48,390 INFO L78 Accepts]: Start accepts. Automaton has 18242 states and 25678 transitions. Word has length 147 [2020-10-28 18:09:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:48,390 INFO L481 AbstractCegarLoop]: Abstraction has 18242 states and 25678 transitions. [2020-10-28 18:09:48,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 18242 states and 25678 transitions. [2020-10-28 18:09:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 18:09:48,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:48,423 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] [2020-10-28 18:09:48,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:09:48,424 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1240643679, now seen corresponding path program 1 times [2020-10-28 18:09:48,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:48,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070298772] [2020-10-28 18:09:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:49,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:49,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 18:09:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:09:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-28 18:09:49,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:49,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:09:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:09:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 18:09:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:09:50,291 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:09:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:09:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:09:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:09:50,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:09:50,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:09:50,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:09:50,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:09:50,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:09:50,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:09:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:09:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:09:50,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:09:50,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:09:50,509 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 18:09:50,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070298772] [2020-10-28 18:09:50,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:09:50,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:09:50,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253696508] [2020-10-28 18:09:50,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:09:50,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:09:50,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:09:50,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:09:50,512 INFO L87 Difference]: Start difference. First operand 18242 states and 25678 transitions. Second operand 5 states. [2020-10-28 18:09:53,843 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:09:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:09:56,088 INFO L93 Difference]: Finished difference Result 51470 states and 72496 transitions. [2020-10-28 18:09:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:09:56,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 18:09:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:09:56,169 INFO L225 Difference]: With dead ends: 51470 [2020-10-28 18:09:56,169 INFO L226 Difference]: Without dead ends: 35129 [2020-10-28 18:09:56,209 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 18:09:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35129 states. [2020-10-28 18:09:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35129 to 35126. [2020-10-28 18:09:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35126 states. [2020-10-28 18:09:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35126 states to 35126 states and 48740 transitions. [2020-10-28 18:09:59,061 INFO L78 Accepts]: Start accepts. Automaton has 35126 states and 48740 transitions. Word has length 148 [2020-10-28 18:09:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:09:59,062 INFO L481 AbstractCegarLoop]: Abstraction has 35126 states and 48740 transitions. [2020-10-28 18:09:59,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:09:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 35126 states and 48740 transitions. [2020-10-28 18:09:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 18:09:59,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:09:59,107 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] [2020-10-28 18:09:59,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:09:59,107 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:09:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:09:59,108 INFO L82 PathProgramCache]: Analyzing trace with hash 225960784, now seen corresponding path program 1 times [2020-10-28 18:09:59,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:09:59,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50096244] [2020-10-28 18:09:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:09:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 18:09:59,160 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 18:09:59,160 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 18:09:59,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:09:59,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 06:09:59 BoogieIcfgContainer [2020-10-28 18:09:59,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 18:09:59,218 INFO L168 Benchmark]: Toolchain (without parser) took 80291.39 ms. Allocated memory was 162.5 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 140.3 MB in the beginning and 802.2 MB in the end (delta: -661.9 MB). Peak memory consumption was 977.5 MB. Max. memory is 8.0 GB. [2020-10-28 18:09:59,219 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 162.5 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 18:09:59,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.79 ms. Allocated memory is still 162.5 MB. Free memory was 139.6 MB in the beginning and 136.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-28 18:09:59,220 INFO L168 Benchmark]: Boogie Preprocessor took 134.21 ms. Allocated memory is still 162.5 MB. Free memory was 136.3 MB in the beginning and 132.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 18:09:59,221 INFO L168 Benchmark]: RCFGBuilder took 1465.73 ms. Allocated memory was 162.5 MB in the beginning and 204.5 MB in the end (delta: 41.9 MB). Free memory was 132.0 MB in the beginning and 95.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 79.3 MB. Max. memory is 8.0 GB. [2020-10-28 18:09:59,222 INFO L168 Benchmark]: TraceAbstraction took 77861.95 ms. Allocated memory was 204.5 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 95.1 MB in the beginning and 802.2 MB in the end (delta: -707.0 MB). Peak memory consumption was 890.5 MB. Max. memory is 8.0 GB. [2020-10-28 18:09:59,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 162.5 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 817.79 ms. Allocated memory is still 162.5 MB. Free memory was 139.6 MB in the beginning and 136.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 134.21 ms. Allocated memory is still 162.5 MB. Free memory was 136.3 MB in the beginning and 132.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1465.73 ms. Allocated memory was 162.5 MB in the beginning and 204.5 MB in the end (delta: 41.9 MB). Free memory was 132.0 MB in the beginning and 95.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 79.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 77861.95 ms. Allocated memory was 204.5 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 95.1 MB in the beginning and 802.2 MB in the end (delta: -707.0 MB). Peak memory consumption was 890.5 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; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2198; [L74] int __tmp_2199_0; [L75] int __return_2307; [L76] int __return_2212; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_char() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_char() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] id3 = __VERIFIER_nondet_char() [L103] r3 = __VERIFIER_nondet_char() [L104] st3 = __VERIFIER_nondet_char() [L105] nl3 = __VERIFIER_nondet_char() [L106] m3 = __VERIFIER_nondet_char() [L107] max3 = __VERIFIER_nondet_char() [L108] mode3 = __VERIFIER_nondet_bool() [L110] _Bool init__r121; [L111] _Bool init__r131; [L112] _Bool init__r211; [L113] _Bool init__r231; [L114] _Bool init__r311; [L115] _Bool init__r321; [L116] _Bool init__r122; [L117] int init__tmp; [L118] _Bool init__r132; [L119] int init__tmp___0; [L120] _Bool init__r212; [L121] int init__tmp___1; [L122] _Bool init__r232; [L123] int init__tmp___2; [L124] _Bool init__r312; [L125] int init__tmp___3; [L126] _Bool init__r322; [L127] int init__tmp___4; [L128] int init__tmp___5; [L129] init__r121 = ep12 [L130] init__r131 = ep13 [L131] init__r211 = ep21 [L132] init__r231 = ep23 [L133] init__r311 = ep31 [L134] init__r321 = ep32 [L135] COND FALSE !(!(init__r121 == 0)) [L2225] COND FALSE !(!(init__r131 == 0)) [L2241] init__tmp = 0 [L139] init__r122 = (_Bool)init__tmp [L140] COND FALSE !(!(init__r131 == 0)) [L2202] COND FALSE !(!(init__r121 == 0)) [L2218] init__tmp___0 = 0 [L144] init__r132 = (_Bool)init__tmp___0 [L145] COND FALSE !(!(init__r211 == 0)) [L2179] COND FALSE !(!(init__r231 == 0)) [L2195] init__tmp___1 = 0 [L149] init__r212 = (_Bool)init__tmp___1 [L150] COND FALSE !(!(init__r231 == 0)) [L2156] COND FALSE !(!(init__r211 == 0)) [L2172] init__tmp___2 = 0 [L154] init__r232 = (_Bool)init__tmp___2 [L155] COND FALSE !(!(init__r311 == 0)) [L2133] COND FALSE !(!(init__r321 == 0)) [L2149] init__tmp___3 = 0 [L159] init__r312 = (_Bool)init__tmp___3 [L160] COND FALSE !(!(init__r321 == 0)) [L2110] COND FALSE !(!(init__r311 == 0)) [L2126] init__tmp___4 = 0 [L164] init__r322 = (_Bool)init__tmp___4 [L165] COND TRUE ((int)id1) != ((int)id2) [L167] COND TRUE ((int)id1) != ((int)id3) [L169] COND TRUE ((int)id2) != ((int)id3) [L171] COND TRUE ((int)id1) >= 0 [L173] COND TRUE ((int)id2) >= 0 [L175] COND TRUE ((int)id3) >= 0 [L177] COND TRUE ((int)r1) == 0 [L179] COND TRUE ((int)r2) == 0 [L181] COND TRUE ((int)r3) == 0 [L183] COND TRUE ((int)max1) == ((int)id1) [L185] COND TRUE ((int)max2) == ((int)id2) [L187] COND TRUE ((int)max3) == ((int)id3) [L189] COND TRUE ((int)st1) == 0 [L191] COND TRUE ((int)st2) == 0 [L193] COND TRUE ((int)st3) == 0 [L195] COND TRUE ((int)nl1) == 0 [L197] COND TRUE ((int)nl2) == 0 [L199] COND TRUE ((int)nl3) == 0 [L201] COND TRUE ((int)mode1) == 0 [L203] COND TRUE ((int)mode2) == 0 [L205] COND TRUE ((int)mode3) == 0 [L207] init__tmp___5 = 1 [L208] __return_1708 = init__tmp___5 [L209] main__i2 = __return_1708 [L210] COND TRUE main__i2 != 0 [L212] p12_old = nomsg [L213] p12_new = nomsg [L214] p13_old = nomsg [L215] p13_new = nomsg [L216] p21_old = nomsg [L217] p21_new = nomsg [L218] p23_old = nomsg [L219] p23_new = nomsg [L220] p31_old = nomsg [L221] p31_new = nomsg [L222] p32_old = nomsg [L223] p32_new = nomsg [L224] main__i2 = 0 [L225] COND TRUE main__i2 < 6 [L228] COND FALSE !(!(mode1 == 0)) [L234] COND TRUE ((int)r1) < 2 [L236] COND FALSE !(!(ep12 == 0)) [L247] COND FALSE !(!(ep13 == 0)) [L258] mode1 = 1 [L260] COND FALSE !(!(mode2 == 0)) [L266] COND TRUE ((int)r2) < 2 [L268] COND FALSE !(!(ep21 == 0)) [L279] COND FALSE !(!(ep23 == 0)) [L290] mode2 = 1 [L292] COND FALSE !(!(mode3 == 0)) [L298] COND TRUE ((int)r3) < 2 [L300] COND FALSE !(!(ep31 == 0)) [L311] COND FALSE !(!(ep32 == 0)) [L322] mode3 = 1 [L323] p12_old = p12_new [L324] p12_new = nomsg [L325] p13_old = p13_new [L326] p13_new = nomsg [L327] p21_old = p21_new [L328] p21_new = nomsg [L329] p23_old = p23_new [L330] p23_new = nomsg [L331] p31_old = p31_new [L332] p31_new = nomsg [L333] p32_old = p32_new [L334] p32_new = nomsg [L336] int check__tmp; [L337] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L339] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L341] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L343] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L345] COND FALSE !(((int)r1) >= 2) [L351] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L353] COND TRUE ((int)r1) < 2 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] check__tmp = 1 [L366] __return_1836 = check__tmp [L367] main__c1 = __return_1836 [L369] _Bool __tmp_1; [L370] __tmp_1 = main__c1 [L371] _Bool assert__arg; [L372] assert__arg = __tmp_1 [L373] COND FALSE !(assert__arg == 0) [L379] int main____CPAchecker_TMP_0 = main__i2; [L380] main__i2 = main__i2 + 1 [L381] COND TRUE main__i2 < 6 [L384] COND TRUE !(mode1 == 0) [L386] r1 = (char)(((int)r1) + 1) [L387] COND FALSE !(!(ep21 == 0)) [L395] COND FALSE !(!(ep31 == 0)) [L403] COND FALSE !(((int)r1) == 2) [L409] mode1 = 0 [L411] COND TRUE !(mode2 == 0) [L413] r2 = (char)(((int)r2) + 1) [L414] COND FALSE !(!(ep12 == 0)) [L422] COND FALSE !(!(ep32 == 0)) [L430] COND FALSE !(((int)r2) == 2) [L436] mode2 = 0 [L438] COND TRUE !(mode3 == 0) [L440] r3 = (char)(((int)r3) + 1) [L441] COND FALSE !(!(ep13 == 0)) [L449] COND FALSE !(!(ep23 == 0)) [L457] COND FALSE !(((int)r3) == 2) [L463] mode3 = 0 [L464] p12_old = p12_new [L465] p12_new = nomsg [L466] p13_old = p13_new [L467] p13_new = nomsg [L468] p21_old = p21_new [L469] p21_new = nomsg [L470] p23_old = p23_new [L471] p23_new = nomsg [L472] p31_old = p31_new [L473] p31_new = nomsg [L474] p32_old = p32_new [L475] p32_new = nomsg [L477] int check__tmp; [L478] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L480] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L482] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L484] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L486] COND FALSE !(((int)r1) >= 2) [L492] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L494] COND TRUE ((int)r1) < 2 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L504] COND TRUE ((int)r1) < 2 [L506] check__tmp = 1 [L507] __return_1954 = check__tmp [L508] main__c1 = __return_1954 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND FALSE !(assert__arg == 0) [L520] int main____CPAchecker_TMP_0 = main__i2; [L521] main__i2 = main__i2 + 1 [L522] COND TRUE main__i2 < 6 [L525] COND FALSE !(!(mode1 == 0)) [L531] COND TRUE ((int)r1) < 2 [L533] COND FALSE !(!(ep12 == 0)) [L544] COND FALSE !(!(ep13 == 0)) [L555] mode1 = 1 [L557] COND FALSE !(!(mode2 == 0)) [L563] COND TRUE ((int)r2) < 2 [L565] COND FALSE !(!(ep21 == 0)) [L576] COND FALSE !(!(ep23 == 0)) [L587] mode2 = 1 [L589] COND FALSE !(!(mode3 == 0)) [L595] COND TRUE ((int)r3) < 2 [L597] COND FALSE !(!(ep31 == 0)) [L608] COND FALSE !(!(ep32 == 0)) [L619] mode3 = 1 [L620] p12_old = p12_new [L621] p12_new = nomsg [L622] p13_old = p13_new [L623] p13_new = nomsg [L624] p21_old = p21_new [L625] p21_new = nomsg [L626] p23_old = p23_new [L627] p23_new = nomsg [L628] p31_old = p31_new [L629] p31_new = nomsg [L630] p32_old = p32_new [L631] p32_new = nomsg [L633] int check__tmp; [L634] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L636] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L638] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L640] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L642] COND FALSE !(((int)r1) >= 2) [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L650] COND TRUE ((int)r1) < 2 [L652] COND FALSE !(((int)r1) >= 2) [L658] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L660] COND TRUE ((int)r1) < 2 [L662] check__tmp = 1 [L663] __return_2075 = check__tmp [L664] main__c1 = __return_2075 [L666] _Bool __tmp_3; [L667] __tmp_3 = main__c1 [L668] _Bool assert__arg; [L669] assert__arg = __tmp_3 [L670] COND FALSE !(assert__arg == 0) [L676] int main____CPAchecker_TMP_0 = main__i2; [L677] main__i2 = main__i2 + 1 [L678] COND TRUE main__i2 < 6 [L681] COND TRUE !(mode1 == 0) [L683] r1 = (char)(((int)r1) + 1) [L684] COND FALSE !(!(ep21 == 0)) [L692] COND FALSE !(!(ep31 == 0)) [L700] COND TRUE ((int)r1) == 2 [L702] COND TRUE ((int)max1) == ((int)id1) [L704] st1 = 1 [L706] mode1 = 0 [L708] COND TRUE !(mode2 == 0) [L710] r2 = (char)(((int)r2) + 1) [L711] COND FALSE !(!(ep12 == 0)) [L719] COND FALSE !(!(ep32 == 0)) [L727] COND TRUE ((int)r2) == 2 [L729] COND TRUE ((int)max2) == ((int)id2) [L731] st2 = 1 [L733] mode2 = 0 [L735] COND TRUE !(mode3 == 0) [L737] r3 = (char)(((int)r3) + 1) [L738] COND FALSE !(!(ep13 == 0)) [L746] COND FALSE !(!(ep23 == 0)) [L754] COND TRUE ((int)r3) == 2 [L756] COND TRUE ((int)max3) == ((int)id3) [L758] st3 = 1 [L760] mode3 = 0 [L761] p12_old = p12_new [L762] p12_new = nomsg [L763] p13_old = p13_new [L764] p13_new = nomsg [L765] p21_old = p21_new [L766] p21_new = nomsg [L767] p23_old = p23_new [L768] p23_new = nomsg [L769] p31_old = p31_new [L770] p31_new = nomsg [L771] p32_old = p32_new [L772] p32_new = nomsg [L774] int check__tmp; [L775] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1400] check__tmp = 0 [L803] __return_2198 = check__tmp [L804] main__c1 = __return_2198 [L805] __tmp_2199_0 = main____CPAchecker_TMP_0 [L807] main____CPAchecker_TMP_0 = __tmp_2199_0 [L809] _Bool __tmp_4; [L810] __tmp_4 = main__c1 [L811] _Bool assert__arg; [L812] assert__arg = __tmp_4 [L813] COND TRUE assert__arg == 0 [L815] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 312 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 77.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5352 SDtfs, 5479 SDslu, 3071 SDs, 0 SdLazy, 5903 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35126occurred 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: 6.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 40.4s InterpolantComputationTime, 1308 NumberOfCodeBlocks, 1308 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1151 ConstructedInterpolants, 0 QuantifiedInterpolants, 1246088 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...