/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:35:41,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:35:41,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:35:41,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:35:41,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:35:41,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:35:41,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:35:41,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:35:41,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:35:41,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:35:41,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:35:41,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:35:41,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:35:41,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:35:41,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:35:41,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:35:41,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:35:41,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:35:41,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:35:41,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:35:41,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:35:41,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:35:41,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:35:41,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:35:41,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:35:41,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:35:41,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:35:41,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:35:41,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:35:41,644 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:35:41,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:35:41,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:35:41,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:35:41,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:35:41,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:35:41,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:35:41,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:35:41,646 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:35:41,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:35:41,647 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:35:41,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:35:41,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:35:41,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:35:41,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:35:41,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:35:41,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:35:41,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:35:41,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:35:41,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:35:41,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:35:41,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:35:41,650 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:35:41,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:35:41,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:35:41,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:35:41,874 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:35:41,877 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:35:41,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:35:43,009 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:35:43,270 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:35:43,271 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:35:43,285 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520f2e6de/ae36cc9723144fce81b2c1d5a945f940/FLAG31c6823a9 [2023-03-31 01:35:43,297 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520f2e6de/ae36cc9723144fce81b2c1d5a945f940 [2023-03-31 01:35:43,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:35:43,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:35:43,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:35:43,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:35:43,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:35:43,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@feb7831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43, skipping insertion in model container [2023-03-31 01:35:43,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:35:43,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:35:43,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c[31172,31185] [2023-03-31 01:35:43,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:35:43,674 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:35:43,771 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c[31172,31185] [2023-03-31 01:35:43,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:35:43,788 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:35:43,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43 WrapperNode [2023-03-31 01:35:43,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:35:43,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:35:43,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:35:43,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:35:43,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,856 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:35:43,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:35:43,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:35:43,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:35:43,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (1/1) ... [2023-03-31 01:35:43,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:35:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:35:43,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:35:43,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:35:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:35:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 01:35:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:35:43,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-03-31 01:35:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:35:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:35:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:35:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:35:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:35:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:35:44,121 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:35:44,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:35:45,025 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:35:45,038 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:35:45,038 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 01:35:45,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:35:45 BoogieIcfgContainer [2023-03-31 01:35:45,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:35:45,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:35:45,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:35:45,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:35:45,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:35:43" (1/3) ... [2023-03-31 01:35:45,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d135d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:35:45, skipping insertion in model container [2023-03-31 01:35:45,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:35:43" (2/3) ... [2023-03-31 01:35:45,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d135d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:35:45, skipping insertion in model container [2023-03-31 01:35:45,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:35:45" (3/3) ... [2023-03-31 01:35:45,047 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c [2023-03-31 01:35:45,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:35:45,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:35:45,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:35:45,110 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47883268, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:35:45,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:35:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 319 states have (on average 1.7899686520376175) internal successors, (571), 321 states have internal predecessors, (571), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 01:35:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:35:45,130 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:35:45,130 INFO L195 NwaCegarLoop]: 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] [2023-03-31 01:35:45,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:35:45,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:35:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -785977843, now seen corresponding path program 1 times [2023-03-31 01:35:45,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:35:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225411443] [2023-03-31 01:35:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:35:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:35:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:35:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:35:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:35:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:35:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:35:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-03-31 01:35:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:35:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-03-31 01:35:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:35:46,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:35:46,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225411443] [2023-03-31 01:35:46,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225411443] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:35:46,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:35:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:35:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561482637] [2023-03-31 01:35:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:35:46,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:35:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:35:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:35:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:35:46,330 INFO L87 Difference]: Start difference. First operand has 341 states, 319 states have (on average 1.7899686520376175) internal successors, (571), 321 states have internal predecessors, (571), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:35:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:35:48,750 INFO L93 Difference]: Finished difference Result 496 states and 847 transitions. [2023-03-31 01:35:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:35:48,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 108 [2023-03-31 01:35:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:35:48,771 INFO L225 Difference]: With dead ends: 496 [2023-03-31 01:35:48,771 INFO L226 Difference]: Without dead ends: 360 [2023-03-31 01:35:48,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:35:48,777 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 867 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:35:48,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 48 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-03-31 01:35:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-03-31 01:35:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 336. [2023-03-31 01:35:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 316 states have (on average 1.7848101265822784) internal successors, (564), 317 states have internal predecessors, (564), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:35:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 583 transitions. [2023-03-31 01:35:48,912 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 583 transitions. Word has length 108 [2023-03-31 01:35:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:35:48,912 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 583 transitions. [2023-03-31 01:35:48,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:35:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 583 transitions. [2023-03-31 01:35:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:35:48,915 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:35:48,916 INFO L195 NwaCegarLoop]: 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] [2023-03-31 01:35:48,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:35:48,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:35:48,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:35:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash 107508495, now seen corresponding path program 1 times [2023-03-31 01:35:48,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:35:48,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646946168] [2023-03-31 01:35:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:35:48,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:35:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:35:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:35:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-03-31 01:35:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-03-31 01:35:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-03-31 01:35:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-03-31 01:35:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-31 01:35:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-03-31 01:35:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:35:49,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:35:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646946168] [2023-03-31 01:35:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646946168] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:35:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:35:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 01:35:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618051131] [2023-03-31 01:35:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:35:49,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 01:35:49,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:35:49,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 01:35:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:35:49,823 INFO L87 Difference]: Start difference. First operand 336 states and 583 transitions. Second operand has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:35:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:35:54,207 INFO L93 Difference]: Finished difference Result 494 states and 839 transitions. [2023-03-31 01:35:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 01:35:54,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 108 [2023-03-31 01:35:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:35:54,212 INFO L225 Difference]: With dead ends: 494 [2023-03-31 01:35:54,212 INFO L226 Difference]: Without dead ends: 360 [2023-03-31 01:35:54,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-03-31 01:35:54,215 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2708 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 4200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:35:54,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 132 Invalid, 4200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-03-31 01:35:54,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-03-31 01:35:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 336. [2023-03-31 01:35:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 316 states have (on average 1.639240506329114) internal successors, (518), 317 states have internal predecessors, (518), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 01:35:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 537 transitions. [2023-03-31 01:35:54,286 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 537 transitions. Word has length 108 [2023-03-31 01:35:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:35:54,287 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 537 transitions. [2023-03-31 01:35:54,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 7 states have internal predecessors, (90), 3 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 01:35:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 537 transitions. [2023-03-31 01:35:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-03-31 01:35:54,289 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:35:54,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:35:54,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:35:54,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:35:54,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:35:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1848153365, now seen corresponding path program 1 times [2023-03-31 01:35:54,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:35:54,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046529114] [2023-03-31 01:35:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:35:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:35:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:35:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:35:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-31 01:35:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-03-31 01:35:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-31 01:35:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:35:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:35:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 01:35:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:35:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:35:55,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:35:55,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046529114] [2023-03-31 01:35:55,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046529114] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:35:55,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:35:55,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-03-31 01:35:55,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282395829] [2023-03-31 01:35:55,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:35:55,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-31 01:35:55,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:35:55,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-31 01:35:55,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-03-31 01:35:55,487 INFO L87 Difference]: Start difference. First operand 336 states and 537 transitions. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:36:10,045 INFO L93 Difference]: Finished difference Result 2145 states and 3519 transitions. [2023-03-31 01:36:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-03-31 01:36:10,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 153 [2023-03-31 01:36:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:36:10,056 INFO L225 Difference]: With dead ends: 2145 [2023-03-31 01:36:10,056 INFO L226 Difference]: Without dead ends: 2017 [2023-03-31 01:36:10,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2965 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1562, Invalid=7180, Unknown=0, NotChecked=0, Total=8742 [2023-03-31 01:36:10,062 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8536 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5111 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8547 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 5406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 5111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:36:10,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8547 Valid, 125 Invalid, 5406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 5111 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-03-31 01:36:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-03-31 01:36:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 966. [2023-03-31 01:36:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 878 states have (on average 1.6628701594533029) internal successors, (1460), 887 states have internal predecessors, (1460), 40 states have call successors, (40), 40 states have call predecessors, (40), 47 states have return successors, (67), 39 states have call predecessors, (67), 39 states have call successors, (67) [2023-03-31 01:36:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1567 transitions. [2023-03-31 01:36:10,214 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1567 transitions. Word has length 153 [2023-03-31 01:36:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:36:10,215 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1567 transitions. [2023-03-31 01:36:10,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1567 transitions. [2023-03-31 01:36:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-03-31 01:36:10,218 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:36:10,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:36:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:36:10,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:36:10,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:36:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1000183015, now seen corresponding path program 1 times [2023-03-31 01:36:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:36:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006515368] [2023-03-31 01:36:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:36:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:36:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:36:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:36:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-31 01:36:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-03-31 01:36:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:10,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-31 01:36:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:36:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:11,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:36:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:11,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 01:36:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:36:11,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:36:11,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006515368] [2023-03-31 01:36:11,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006515368] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:36:11,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:36:11,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:36:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142317141] [2023-03-31 01:36:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:36:11,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:36:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:36:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:36:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:36:11,073 INFO L87 Difference]: Start difference. First operand 966 states and 1567 transitions. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:36:17,766 INFO L93 Difference]: Finished difference Result 3197 states and 5216 transitions. [2023-03-31 01:36:17,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:36:17,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 154 [2023-03-31 01:36:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:36:17,778 INFO L225 Difference]: With dead ends: 3197 [2023-03-31 01:36:17,778 INFO L226 Difference]: Without dead ends: 2439 [2023-03-31 01:36:17,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 01:36:17,789 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5091 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:36:17,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5101 Valid, 117 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3645 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-31 01:36:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2023-03-31 01:36:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2065. [2023-03-31 01:36:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1852 states have (on average 1.6592872570194384) internal successors, (3073), 1878 states have internal predecessors, (3073), 94 states have call successors, (94), 94 states have call predecessors, (94), 118 states have return successors, (180), 93 states have call predecessors, (180), 93 states have call successors, (180) [2023-03-31 01:36:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3347 transitions. [2023-03-31 01:36:18,014 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3347 transitions. Word has length 154 [2023-03-31 01:36:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:36:18,015 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 3347 transitions. [2023-03-31 01:36:18,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 6 states have internal predecessors, (136), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3347 transitions. [2023-03-31 01:36:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-03-31 01:36:18,018 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:36:18,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:36:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:36:18,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:36:18,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:36:18,019 INFO L85 PathProgramCache]: Analyzing trace with hash -534590878, now seen corresponding path program 1 times [2023-03-31 01:36:18,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:36:18,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228646469] [2023-03-31 01:36:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:36:18,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:36:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:36:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:36:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-31 01:36:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-03-31 01:36:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-31 01:36:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:36:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:36:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 01:36:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:36:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:36:18,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228646469] [2023-03-31 01:36:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228646469] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:36:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:36:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:36:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460192058] [2023-03-31 01:36:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:36:18,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:36:18,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:36:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:36:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:36:18,796 INFO L87 Difference]: Start difference. First operand 2065 states and 3347 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:36:25,644 INFO L93 Difference]: Finished difference Result 13075 states and 21343 transitions. [2023-03-31 01:36:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:36:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 155 [2023-03-31 01:36:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:36:25,691 INFO L225 Difference]: With dead ends: 13075 [2023-03-31 01:36:25,691 INFO L226 Difference]: Without dead ends: 11218 [2023-03-31 01:36:25,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 01:36:25,701 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5141 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5151 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:36:25,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5151 Valid, 117 Invalid, 3744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-31 01:36:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2023-03-31 01:36:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 9380. [2023-03-31 01:36:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 8332 states have (on average 1.6556649063850215) internal successors, (13795), 8473 states have internal predecessors, (13795), 454 states have call successors, (454), 454 states have call predecessors, (454), 593 states have return successors, (969), 453 states have call predecessors, (969), 453 states have call successors, (969) [2023-03-31 01:36:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 15218 transitions. [2023-03-31 01:36:26,818 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 15218 transitions. Word has length 155 [2023-03-31 01:36:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:36:26,819 INFO L495 AbstractCegarLoop]: Abstraction has 9380 states and 15218 transitions. [2023-03-31 01:36:26,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 6 states have internal predecessors, (137), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 15218 transitions. [2023-03-31 01:36:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-03-31 01:36:26,822 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:36:26,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:36:26,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:36:26,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:36:26,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:36:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash 962178544, now seen corresponding path program 1 times [2023-03-31 01:36:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:36:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937475229] [2023-03-31 01:36:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:36:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:36:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:36:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 01:36:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-03-31 01:36:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-03-31 01:36:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-03-31 01:36:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-03-31 01:36:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-31 01:36:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-03-31 01:36:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:36:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:36:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:36:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937475229] [2023-03-31 01:36:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937475229] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:36:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:36:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 01:36:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078961604] [2023-03-31 01:36:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:36:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 01:36:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:36:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 01:36:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:36:27,600 INFO L87 Difference]: Start difference. First operand 9380 states and 15218 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 01:36:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:36:37,250 INFO L93 Difference]: Finished difference Result 64141 states and 104653 transitions. [2023-03-31 01:36:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 01:36:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (10), 7 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 156 [2023-03-31 01:36:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:36:37,482 INFO L225 Difference]: With dead ends: 64141 [2023-03-31 01:36:37,482 INFO L226 Difference]: Without dead ends: 54969 [2023-03-31 01:36:37,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 01:36:37,592 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 3179 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3958 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3189 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:36:37,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3189 Valid, 117 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3958 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-31 01:36:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54969 states.