/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:53:19,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:53:19,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:53:19,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:53:19,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:53:19,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:53:19,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:53:19,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:53:19,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:53:19,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:53:19,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:53:19,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:53:19,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:53:19,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:53:19,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:53:19,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:53:19,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:53:19,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:53:19,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:53:19,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:53:19,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:53:19,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:53:19,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:53:19,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:53:19,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 19:53:20,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:53:20,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:53:20,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:53:20,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:53:20,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:53:20,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:53:20,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:53:20,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:53:20,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:53:20,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:53:20,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:53:20,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 19:53:20,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:53:20,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:53:20,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:53:20,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:53:20,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:53:20,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:53:20,033 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:53:20,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:53:20,034 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:53:20,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:53:20,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:53:20,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:53:20,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:53:20,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:53:20,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:53:20,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:53:20,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:53:20,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:53:20,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:53:20,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:53:20,036 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:53:20,036 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:53:20,036 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:53:20,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:53:20,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:53:20,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:53:20,326 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:53:20,326 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:53:20,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-12-05 19:53:21,256 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:53:21,466 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:53:21,466 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-12-05 19:53:21,473 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e62469b/31620d71ffc94f2397f307bcf9e3aeb3/FLAGabcf01c91 [2022-12-05 19:53:21,482 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e62469b/31620d71ffc94f2397f307bcf9e3aeb3 [2022-12-05 19:53:21,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:53:21,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:53:21,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:53:21,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:53:21,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:53:21,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee81a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21, skipping insertion in model container [2022-12-05 19:53:21,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:53:21,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:53:21,718 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-12-05 19:53:21,727 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-12-05 19:53:21,733 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-12-05 19:53:21,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:53:21,755 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:53:21,783 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-12-05 19:53:21,784 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-12-05 19:53:21,785 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-12-05 19:53:21,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:53:21,819 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:53:21,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21 WrapperNode [2022-12-05 19:53:21,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:53:21,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:53:21,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:53:21,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:53:21,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,872 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-12-05 19:53:21,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:53:21,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:53:21,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:53:21,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:53:21,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:53:21,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:53:21,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:53:21,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:53:21,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (1/1) ... [2022-12-05 19:53:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:53:21,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:21,956 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) [2022-12-05 19:53:21,961 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 [2022-12-05 19:53:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:53:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-05 19:53:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-05 19:53:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-05 19:53:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-05 19:53:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:53:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 19:53:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:53:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:53:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:53:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-05 19:53:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:53:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:53:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:53:21,984 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:53:22,100 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:53:22,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:53:22,364 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:53:22,370 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:53:22,370 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 19:53:22,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:53:22 BoogieIcfgContainer [2022-12-05 19:53:22,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:53:22,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:53:22,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:53:22,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:53:22,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:53:21" (1/3) ... [2022-12-05 19:53:22,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d23dcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:53:22, skipping insertion in model container [2022-12-05 19:53:22,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:53:21" (2/3) ... [2022-12-05 19:53:22,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d23dcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:53:22, skipping insertion in model container [2022-12-05 19:53:22,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:53:22" (3/3) ... [2022-12-05 19:53:22,377 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-12-05 19:53:22,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:53:22,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-12-05 19:53:22,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:53:22,489 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 19:53:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 312 flow [2022-12-05 19:53:22,582 INFO L130 PetriNetUnfolder]: 11/146 cut-off events. [2022-12-05 19:53:22,582 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:53:22,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 11/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-12-05 19:53:22,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 148 transitions, 312 flow [2022-12-05 19:53:22,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 137 transitions, 283 flow [2022-12-05 19:53:22,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:53:22,604 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=false, 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;@75d537a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:53:22,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-05 19:53:22,629 INFO L130 PetriNetUnfolder]: 4/99 cut-off events. [2022-12-05 19:53:22,629 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 19:53:22,629 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:22,630 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:22,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash -408785584, now seen corresponding path program 1 times [2022-12-05 19:53:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:22,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533156101] [2022-12-05 19:53:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:22,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:22,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:22,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445314126] [2022-12-05 19:53:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:22,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:22,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:22,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:53:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:22,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 19:53:22,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:23,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:23,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:23,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533156101] [2022-12-05 19:53:23,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445314126] [2022-12-05 19:53:23,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445314126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:23,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:23,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 19:53:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472932036] [2022-12-05 19:53:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:23,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 19:53:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 19:53:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 19:53:23,209 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 148 [2022-12-05 19:53:23,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:23,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:23,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 148 [2022-12-05 19:53:23,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:23,349 INFO L130 PetriNetUnfolder]: 48/348 cut-off events. [2022-12-05 19:53:23,350 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-05 19:53:23,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 348 events. 48/348 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1558 event pairs, 5 based on Foata normal form. 38/345 useless extension candidates. Maximal degree in co-relation 363. Up to 44 conditions per place. [2022-12-05 19:53:23,356 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 24 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-12-05 19:53:23,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 138 transitions, 346 flow [2022-12-05 19:53:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 19:53:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 19:53:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2022-12-05 19:53:23,370 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.893581081081081 [2022-12-05 19:53:23,372 INFO L175 Difference]: Start difference. First operand has 133 places, 137 transitions, 283 flow. Second operand 4 states and 529 transitions. [2022-12-05 19:53:23,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 138 transitions, 346 flow [2022-12-05 19:53:23,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 138 transitions, 337 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 19:53:23,377 INFO L231 Difference]: Finished difference. Result has 130 places, 129 transitions, 273 flow [2022-12-05 19:53:23,379 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=130, PETRI_TRANSITIONS=129} [2022-12-05 19:53:23,381 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, -3 predicate places. [2022-12-05 19:53:23,381 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 129 transitions, 273 flow [2022-12-05 19:53:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:23,382 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:23,382 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:23,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:23,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-05 19:53:23,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1083821067, now seen corresponding path program 1 times [2022-12-05 19:53:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:23,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167267465] [2022-12-05 19:53:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:23,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:23,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167267465] [2022-12-05 19:53:23,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167267465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:23,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:23,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:53:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838619806] [2022-12-05 19:53:23,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:23,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:53:23,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:53:23,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:53:23,953 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 148 [2022-12-05 19:53:23,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 129 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:23,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:23,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 148 [2022-12-05 19:53:23,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:24,040 INFO L130 PetriNetUnfolder]: 51/349 cut-off events. [2022-12-05 19:53:24,040 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-05 19:53:24,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 349 events. 51/349 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1348 event pairs, 10 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 278. Up to 56 conditions per place. [2022-12-05 19:53:24,042 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 19 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2022-12-05 19:53:24,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 332 flow [2022-12-05 19:53:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 19:53:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 19:53:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-12-05 19:53:24,046 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8400900900900901 [2022-12-05 19:53:24,046 INFO L175 Difference]: Start difference. First operand has 130 places, 129 transitions, 273 flow. Second operand 6 states and 746 transitions. [2022-12-05 19:53:24,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 332 flow [2022-12-05 19:53:24,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:53:24,053 INFO L231 Difference]: Finished difference. Result has 136 places, 129 transitions, 289 flow [2022-12-05 19:53:24,054 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=136, PETRI_TRANSITIONS=129} [2022-12-05 19:53:24,054 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 3 predicate places. [2022-12-05 19:53:24,055 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 129 transitions, 289 flow [2022-12-05 19:53:24,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.66666666666667) internal successors, (730), 6 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:24,055 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:24,056 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:24,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:53:24,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash -187723191, now seen corresponding path program 1 times [2022-12-05 19:53:24,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:24,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321141260] [2022-12-05 19:53:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:24,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:24,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:24,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496591261] [2022-12-05 19:53:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:24,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:24,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:53:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:24,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 19:53:24,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:24,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:24,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321141260] [2022-12-05 19:53:24,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:24,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496591261] [2022-12-05 19:53:24,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496591261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:24,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:24,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:53:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668754332] [2022-12-05 19:53:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:24,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:53:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:53:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:53:24,217 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 148 [2022-12-05 19:53:24,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 129 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:24,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:24,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 148 [2022-12-05 19:53:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:24,352 INFO L130 PetriNetUnfolder]: 53/325 cut-off events. [2022-12-05 19:53:24,353 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 19:53:24,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 325 events. 53/325 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1166 event pairs, 11 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 226. Up to 39 conditions per place. [2022-12-05 19:53:24,355 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 28 selfloop transitions, 9 changer transitions 0/143 dead transitions. [2022-12-05 19:53:24,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 401 flow [2022-12-05 19:53:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:53:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:53:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 850 transitions. [2022-12-05 19:53:24,357 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8204633204633205 [2022-12-05 19:53:24,357 INFO L175 Difference]: Start difference. First operand has 136 places, 129 transitions, 289 flow. Second operand 7 states and 850 transitions. [2022-12-05 19:53:24,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 401 flow [2022-12-05 19:53:24,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 143 transitions, 391 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 19:53:24,361 INFO L231 Difference]: Finished difference. Result has 140 places, 134 transitions, 326 flow [2022-12-05 19:53:24,361 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2022-12-05 19:53:24,362 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 7 predicate places. [2022-12-05 19:53:24,362 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 326 flow [2022-12-05 19:53:24,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:24,362 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:24,362 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:24,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 19:53:24,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-05 19:53:24,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 354152347, now seen corresponding path program 1 times [2022-12-05 19:53:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:24,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319209969] [2022-12-05 19:53:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:24,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:24,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319209969] [2022-12-05 19:53:24,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319209969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:24,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:24,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:53:24,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227893481] [2022-12-05 19:53:24,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:24,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:53:24,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:53:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:53:24,702 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 148 [2022-12-05 19:53:24,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:24,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:24,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 148 [2022-12-05 19:53:24,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:24,758 INFO L130 PetriNetUnfolder]: 40/444 cut-off events. [2022-12-05 19:53:24,758 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-05 19:53:24,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 444 events. 40/444 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1673 event pairs, 4 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 523. Up to 35 conditions per place. [2022-12-05 19:53:24,761 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 10 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2022-12-05 19:53:24,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 363 flow [2022-12-05 19:53:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2022-12-05 19:53:24,762 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9099099099099099 [2022-12-05 19:53:24,762 INFO L175 Difference]: Start difference. First operand has 140 places, 134 transitions, 326 flow. Second operand 3 states and 404 transitions. [2022-12-05 19:53:24,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 363 flow [2022-12-05 19:53:24,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:24,768 INFO L231 Difference]: Finished difference. Result has 142 places, 135 transitions, 339 flow [2022-12-05 19:53:24,768 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=142, PETRI_TRANSITIONS=135} [2022-12-05 19:53:24,769 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 9 predicate places. [2022-12-05 19:53:24,770 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 135 transitions, 339 flow [2022-12-05 19:53:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:24,776 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:24,777 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:53:24,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1533213792, now seen corresponding path program 1 times [2022-12-05 19:53:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:24,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102672003] [2022-12-05 19:53:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:24,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:24,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:24,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928571542] [2022-12-05 19:53:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:24,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:24,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:24,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:53:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:24,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-05 19:53:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:24,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102672003] [2022-12-05 19:53:24,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928571542] [2022-12-05 19:53:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928571542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:24,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:24,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 19:53:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85873936] [2022-12-05 19:53:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 19:53:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 19:53:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 19:53:24,985 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 148 [2022-12-05 19:53:24,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 135 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:24,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:24,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 148 [2022-12-05 19:53:24,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:25,045 INFO L130 PetriNetUnfolder]: 40/410 cut-off events. [2022-12-05 19:53:25,046 INFO L131 PetriNetUnfolder]: For 46/49 co-relation queries the response was YES. [2022-12-05 19:53:25,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 410 events. 40/410 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1446 event pairs, 10 based on Foata normal form. 3/388 useless extension candidates. Maximal degree in co-relation 411. Up to 52 conditions per place. [2022-12-05 19:53:25,047 INFO L137 encePairwiseOnDemand]: 146/148 looper letters, 17 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2022-12-05 19:53:25,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 128 transitions, 349 flow [2022-12-05 19:53:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-05 19:53:25,049 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8716216216216216 [2022-12-05 19:53:25,049 INFO L175 Difference]: Start difference. First operand has 142 places, 135 transitions, 339 flow. Second operand 3 states and 387 transitions. [2022-12-05 19:53:25,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 128 transitions, 349 flow [2022-12-05 19:53:25,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 128 transitions, 328 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-05 19:53:25,053 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 287 flow [2022-12-05 19:53:25,053 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2022-12-05 19:53:25,054 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, -1 predicate places. [2022-12-05 19:53:25,054 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 287 flow [2022-12-05 19:53:25,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:25,055 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:25,055 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:25,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:25,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1848566636, now seen corresponding path program 1 times [2022-12-05 19:53:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:25,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164647175] [2022-12-05 19:53:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:25,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:25,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164647175] [2022-12-05 19:53:25,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-05 19:53:25,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434247520] [2022-12-05 19:53:25,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:25,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:25,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:25,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:25,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:53:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:25,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 19:53:25,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:25,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-05 19:53:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:25,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:25,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434247520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:25,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:25,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:53:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23409363] [2022-12-05 19:53:25,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:25,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:53:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:25,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:53:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:53:25,439 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 148 [2022-12-05 19:53:25,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:25,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:25,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 148 [2022-12-05 19:53:25,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:25,482 INFO L130 PetriNetUnfolder]: 37/397 cut-off events. [2022-12-05 19:53:25,483 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-05 19:53:25,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 397 events. 37/397 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1547 event pairs, 6 based on Foata normal form. 8/379 useless extension candidates. Maximal degree in co-relation 324. Up to 42 conditions per place. [2022-12-05 19:53:25,485 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 15 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2022-12-05 19:53:25,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 128 transitions, 332 flow [2022-12-05 19:53:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-05 19:53:25,486 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8716216216216216 [2022-12-05 19:53:25,486 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 287 flow. Second operand 3 states and 387 transitions. [2022-12-05 19:53:25,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 128 transitions, 332 flow [2022-12-05 19:53:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:25,488 INFO L231 Difference]: Finished difference. Result has 133 places, 126 transitions, 294 flow [2022-12-05 19:53:25,488 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=133, PETRI_TRANSITIONS=126} [2022-12-05 19:53:25,490 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 0 predicate places. [2022-12-05 19:53:25,490 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 126 transitions, 294 flow [2022-12-05 19:53:25,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:25,491 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:25,491 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:25,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:25,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -769077566, now seen corresponding path program 1 times [2022-12-05 19:53:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:25,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969763594] [2022-12-05 19:53:25,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:25,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:25,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979419919] [2022-12-05 19:53:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:25,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:25,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:25,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:53:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:25,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-05 19:53:25,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:26,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:26,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969763594] [2022-12-05 19:53:26,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979419919] [2022-12-05 19:53:26,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979419919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:26,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:26,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:53:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637001713] [2022-12-05 19:53:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:26,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:53:26,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:26,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:53:26,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:53:26,117 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 148 [2022-12-05 19:53:26,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 126 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:26,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:26,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 148 [2022-12-05 19:53:26,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:26,211 INFO L130 PetriNetUnfolder]: 45/492 cut-off events. [2022-12-05 19:53:26,212 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-12-05 19:53:26,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 492 events. 45/492 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2151 event pairs, 13 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 470. Up to 49 conditions per place. [2022-12-05 19:53:26,214 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 27 selfloop transitions, 8 changer transitions 0/138 dead transitions. [2022-12-05 19:53:26,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 138 transitions, 398 flow [2022-12-05 19:53:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 19:53:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 19:53:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 964 transitions. [2022-12-05 19:53:26,215 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8141891891891891 [2022-12-05 19:53:26,216 INFO L175 Difference]: Start difference. First operand has 133 places, 126 transitions, 294 flow. Second operand 8 states and 964 transitions. [2022-12-05 19:53:26,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 138 transitions, 398 flow [2022-12-05 19:53:26,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:53:26,218 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 321 flow [2022-12-05 19:53:26,218 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=321, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-12-05 19:53:26,218 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 7 predicate places. [2022-12-05 19:53:26,218 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 321 flow [2022-12-05 19:53:26,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:26,219 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:26,219 INFO L213 CegarLoopForPetriNet]: 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] [2022-12-05 19:53:26,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:26,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:26,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1934799343, now seen corresponding path program 1 times [2022-12-05 19:53:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:26,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205565476] [2022-12-05 19:53:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:26,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:26,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113936029] [2022-12-05 19:53:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:26,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:26,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:26,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 19:53:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:26,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-05 19:53:26,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:26,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-05 19:53:26,772 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-05 19:53:26,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-05 19:53:26,793 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 19:53:26,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-05 19:53:26,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-05 19:53:26,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-12-05 19:53:27,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-05 19:53:27,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-12-05 19:53:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:27,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205565476] [2022-12-05 19:53:27,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113936029] [2022-12-05 19:53:27,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113936029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:27,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:27,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-05 19:53:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808633999] [2022-12-05 19:53:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:27,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 19:53:27,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 19:53:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-05 19:53:27,458 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 148 [2022-12-05 19:53:27,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 321 flow. Second operand has 17 states, 17 states have (on average 83.58823529411765) internal successors, (1421), 17 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:27,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:27,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 148 [2022-12-05 19:53:27,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:28,466 INFO L130 PetriNetUnfolder]: 806/2812 cut-off events. [2022-12-05 19:53:28,466 INFO L131 PetriNetUnfolder]: For 209/209 co-relation queries the response was YES. [2022-12-05 19:53:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 2812 events. 806/2812 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 21587 event pairs, 247 based on Foata normal form. 0/2599 useless extension candidates. Maximal degree in co-relation 1844. Up to 764 conditions per place. [2022-12-05 19:53:28,479 INFO L137 encePairwiseOnDemand]: 129/148 looper letters, 118 selfloop transitions, 28 changer transitions 8/228 dead transitions. [2022-12-05 19:53:28,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 228 transitions, 869 flow [2022-12-05 19:53:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-05 19:53:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-05 19:53:28,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1776 transitions. [2022-12-05 19:53:28,482 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-05 19:53:28,483 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 321 flow. Second operand 20 states and 1776 transitions. [2022-12-05 19:53:28,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 228 transitions, 869 flow [2022-12-05 19:53:28,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 228 transitions, 854 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-05 19:53:28,487 INFO L231 Difference]: Finished difference. Result has 160 places, 149 transitions, 471 flow [2022-12-05 19:53:28,487 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=471, PETRI_PLACES=160, PETRI_TRANSITIONS=149} [2022-12-05 19:53:28,487 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 27 predicate places. [2022-12-05 19:53:28,487 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 149 transitions, 471 flow [2022-12-05 19:53:28,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 83.58823529411765) internal successors, (1421), 17 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:28,488 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:28,488 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:28,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 19:53:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:28,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash -906206783, now seen corresponding path program 1 times [2022-12-05 19:53:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:28,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43972374] [2022-12-05 19:53:28,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:28,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:28,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:28,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946703184] [2022-12-05 19:53:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:28,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:28,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:28,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:28,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 19:53:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:28,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-05 19:53:28,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:28,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:53:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:28,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43972374] [2022-12-05 19:53:28,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:28,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946703184] [2022-12-05 19:53:28,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946703184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:53:28,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:53:28,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:53:28,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365961348] [2022-12-05 19:53:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:53:28,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:53:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:53:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:53:28,840 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 148 [2022-12-05 19:53:28,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 149 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:28,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:28,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 148 [2022-12-05 19:53:28,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:28,892 INFO L130 PetriNetUnfolder]: 45/544 cut-off events. [2022-12-05 19:53:28,892 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-05 19:53:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 544 events. 45/544 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1851 event pairs, 9 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 787. Up to 33 conditions per place. [2022-12-05 19:53:28,895 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 7 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2022-12-05 19:53:28,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 491 flow [2022-12-05 19:53:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:53:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:53:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2022-12-05 19:53:28,896 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9076576576576577 [2022-12-05 19:53:28,896 INFO L175 Difference]: Start difference. First operand has 160 places, 149 transitions, 471 flow. Second operand 3 states and 403 transitions. [2022-12-05 19:53:28,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 491 flow [2022-12-05 19:53:28,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 468 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-05 19:53:28,899 INFO L231 Difference]: Finished difference. Result has 157 places, 147 transitions, 461 flow [2022-12-05 19:53:28,899 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=157, PETRI_TRANSITIONS=147} [2022-12-05 19:53:28,900 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 24 predicate places. [2022-12-05 19:53:28,900 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 147 transitions, 461 flow [2022-12-05 19:53:28,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:28,900 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:53:28,900 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:53:28,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 19:53:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:29,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:53:29,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:53:29,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1680242029, now seen corresponding path program 1 times [2022-12-05 19:53:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:53:29,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153456772] [2022-12-05 19:53:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:53:29,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:53:29,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429926391] [2022-12-05 19:53:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:53:29,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:53:29,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:53:29,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:53:29,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 19:53:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:53:29,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-05 19:53:29,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:53:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:30,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:53:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:53:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:53:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153456772] [2022-12-05 19:53:41,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:53:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429926391] [2022-12-05 19:53:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429926391] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:53:41,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:53:41,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-12-05 19:53:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654308384] [2022-12-05 19:53:41,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-05 19:53:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-05 19:53:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:53:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-05 19:53:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-12-05 19:53:41,107 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 148 [2022-12-05 19:53:41,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 147 transitions, 461 flow. Second operand has 22 states, 22 states have (on average 116.31818181818181) internal successors, (2559), 22 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:53:41,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:53:41,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 148 [2022-12-05 19:53:41,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:53:53,186 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 48 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:54:06,876 WARN L233 SmtUtils]: Spent 12.45s on a formula simplification. DAG size of input: 51 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:54:21,363 WARN L233 SmtUtils]: Spent 13.13s on a formula simplification. DAG size of input: 53 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:54:30,389 INFO L130 PetriNetUnfolder]: 84/814 cut-off events. [2022-12-05 19:54:30,389 INFO L131 PetriNetUnfolder]: For 133/134 co-relation queries the response was YES. [2022-12-05 19:54:30,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 814 events. 84/814 cut-off events. For 133/134 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3066 event pairs, 25 based on Foata normal form. 6/802 useless extension candidates. Maximal degree in co-relation 1270. Up to 55 conditions per place. [2022-12-05 19:54:30,393 INFO L137 encePairwiseOnDemand]: 135/148 looper letters, 43 selfloop transitions, 19 changer transitions 2/182 dead transitions. [2022-12-05 19:54:30,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 182 transitions, 690 flow [2022-12-05 19:54:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 19:54:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 19:54:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2231 transitions. [2022-12-05 19:54:30,397 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7933854907539118 [2022-12-05 19:54:30,397 INFO L175 Difference]: Start difference. First operand has 157 places, 147 transitions, 461 flow. Second operand 19 states and 2231 transitions. [2022-12-05 19:54:30,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 182 transitions, 690 flow [2022-12-05 19:54:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 182 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 19:54:30,400 INFO L231 Difference]: Finished difference. Result has 177 places, 156 transitions, 540 flow [2022-12-05 19:54:30,401 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=540, PETRI_PLACES=177, PETRI_TRANSITIONS=156} [2022-12-05 19:54:30,401 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 44 predicate places. [2022-12-05 19:54:30,401 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 156 transitions, 540 flow [2022-12-05 19:54:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 116.31818181818181) internal successors, (2559), 22 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:54:30,402 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:54:30,402 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:54:30,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 19:54:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 19:54:30,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:54:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:54:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1610152380, now seen corresponding path program 1 times [2022-12-05 19:54:30,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:54:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585532822] [2022-12-05 19:54:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:54:30,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:54:30,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:54:30,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335513008] [2022-12-05 19:54:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:54:30,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:54:30,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:54:30,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:54:30,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 19:54:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:54:31,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-05 19:54:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:54:31,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-12-05 19:54:31,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-05 19:54:31,883 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-05 19:54:31,893 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:54:31,894 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2022-12-05 19:54:32,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-05 19:54:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:54:32,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:54:32,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-05 19:54:32,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:54:32,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-05 19:54:32,793 INFO L321 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2022-12-05 19:54:32,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 130 treesize of output 130 [2022-12-05 19:54:32,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:54:32,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 87 [2022-12-05 19:54:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:54:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:54:54,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585532822] [2022-12-05 19:54:54,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:54:54,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335513008] [2022-12-05 19:54:54,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335513008] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:54:54,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:54:54,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2022-12-05 19:54:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849090386] [2022-12-05 19:54:54,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-05 19:54:54,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-05 19:54:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:54:54,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-05 19:54:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-12-05 19:54:54,461 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 148 [2022-12-05 19:54:54,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 156 transitions, 540 flow. Second operand has 48 states, 48 states have (on average 70.5) internal successors, (3384), 48 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:54:54,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:54:54,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 148 [2022-12-05 19:54:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:57:48,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 19:57:52,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 19:58:06,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 19:58:28,590 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 107 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:58:38,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 19:59:00,765 INFO L130 PetriNetUnfolder]: 4557/11603 cut-off events. [2022-12-05 19:59:00,765 INFO L131 PetriNetUnfolder]: For 3914/3914 co-relation queries the response was YES. [2022-12-05 19:59:00,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25124 conditions, 11603 events. 4557/11603 cut-off events. For 3914/3914 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 91693 event pairs, 260 based on Foata normal form. 114/11367 useless extension candidates. Maximal degree in co-relation 22725. Up to 1624 conditions per place. [2022-12-05 19:59:00,819 INFO L137 encePairwiseOnDemand]: 112/148 looper letters, 703 selfloop transitions, 367 changer transitions 178/1301 dead transitions. [2022-12-05 19:59:00,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1301 transitions, 6792 flow [2022-12-05 19:59:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-12-05 19:59:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2022-12-05 19:59:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 15145 transitions. [2022-12-05 19:59:00,869 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49197635135135137 [2022-12-05 19:59:00,869 INFO L175 Difference]: Start difference. First operand has 177 places, 156 transitions, 540 flow. Second operand 208 states and 15145 transitions. [2022-12-05 19:59:00,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1301 transitions, 6792 flow [2022-12-05 19:59:00,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1301 transitions, 6643 flow, removed 62 selfloop flow, removed 9 redundant places. [2022-12-05 19:59:00,897 INFO L231 Difference]: Finished difference. Result has 498 places, 520 transitions, 3679 flow [2022-12-05 19:59:00,897 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=208, PETRI_FLOW=3679, PETRI_PLACES=498, PETRI_TRANSITIONS=520} [2022-12-05 19:59:00,898 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 365 predicate places. [2022-12-05 19:59:00,898 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 520 transitions, 3679 flow [2022-12-05 19:59:00,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 70.5) internal successors, (3384), 48 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:59:00,899 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:59:00,899 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:59:00,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-05 19:59:01,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:59:01,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 19:59:01,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:59:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash 211392666, now seen corresponding path program 2 times [2022-12-05 19:59:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:59:01,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049630391] [2022-12-05 19:59:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:59:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:59:01,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 19:59:01,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144188019] [2022-12-05 19:59:01,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:59:01,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:59:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:59:01,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 19:59:01,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 19:59:01,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:59:01,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:59:01,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-05 19:59:01,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:59:02,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-12-05 19:59:02,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-05 19:59:02,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 13 [2022-12-05 19:59:02,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-05 19:59:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:59:02,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:59:03,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-05 19:59:03,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:59:03,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-05 19:59:03,114 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:59:03,115 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2022-12-05 19:59:03,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:59:03,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 167 treesize of output 135 [2022-12-05 19:59:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:59:10,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:59:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049630391] [2022-12-05 19:59:10,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 19:59:10,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144188019] [2022-12-05 19:59:10,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144188019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:59:10,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-05 19:59:10,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 47 [2022-12-05 19:59:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472748464] [2022-12-05 19:59:10,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-05 19:59:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-05 19:59:10,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:59:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-05 19:59:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2022-12-05 19:59:10,162 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 148 [2022-12-05 19:59:10,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 520 transitions, 3679 flow. Second operand has 47 states, 47 states have (on average 70.57446808510639) internal successors, (3317), 47 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 19:59:10,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:59:10,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 148 [2022-12-05 19:59:10,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:00:03,502 WARN L233 SmtUtils]: Spent 16.90s on a formula simplification. DAG size of input: 106 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:00:11,872 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:00:31,988 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 83 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:00:40,256 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 64 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:00:52,261 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 85 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:01:06,674 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 87 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:01:20,530 WARN L233 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 85 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:01:21,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:01:31,816 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 87 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:01:35,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:01:37,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:01:46,845 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 67 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:02:11,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:02:45,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:03:02,964 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 123 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:03:16,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:03:32,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:03:39,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:03:43,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:03:46,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:03:48,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:05:30,887 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 131 DAG size of output: 113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 20:05:40,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:05:51,890 INFO L130 PetriNetUnfolder]: 7916/19696 cut-off events. [2022-12-05 20:05:51,890 INFO L131 PetriNetUnfolder]: For 729489/729493 co-relation queries the response was YES. [2022-12-05 20:05:52,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117305 conditions, 19696 events. 7916/19696 cut-off events. For 729489/729493 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 173406 event pairs, 429 based on Foata normal form. 149/19357 useless extension candidates. Maximal degree in co-relation 114926. Up to 3245 conditions per place. [2022-12-05 20:05:52,349 INFO L137 encePairwiseOnDemand]: 112/148 looper letters, 1040 selfloop transitions, 570 changer transitions 133/1796 dead transitions. [2022-12-05 20:05:52,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 1796 transitions, 25257 flow [2022-12-05 20:05:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-12-05 20:05:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2022-12-05 20:05:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 14729 transitions. [2022-12-05 20:05:52,393 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.49760135135135136 [2022-12-05 20:05:52,393 INFO L175 Difference]: Start difference. First operand has 498 places, 520 transitions, 3679 flow. Second operand 200 states and 14729 transitions. [2022-12-05 20:05:52,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 1796 transitions, 25257 flow [2022-12-05 20:05:53,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 1796 transitions, 22717 flow, removed 1240 selfloop flow, removed 32 redundant places. [2022-12-05 20:05:53,321 INFO L231 Difference]: Finished difference. Result has 736 places, 919 transitions, 10474 flow [2022-12-05 20:05:53,322 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=200, PETRI_FLOW=10474, PETRI_PLACES=736, PETRI_TRANSITIONS=919} [2022-12-05 20:05:53,322 INFO L294 CegarLoopForPetriNet]: 133 programPoint places, 603 predicate places. [2022-12-05 20:05:53,322 INFO L495 AbstractCegarLoop]: Abstraction has has 736 places, 919 transitions, 10474 flow [2022-12-05 20:05:53,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 70.57446808510639) internal successors, (3317), 47 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:05:53,323 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:05:53,323 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:05:53,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-05 20:05:53,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-05 20:05:53,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-12-05 20:05:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:05:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1936466634, now seen corresponding path program 3 times [2022-12-05 20:05:53,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:05:53,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308606997] [2022-12-05 20:05:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:05:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:05:53,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-05 20:05:53,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769570855] [2022-12-05 20:05:53,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 20:05:53,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:05:53,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:05:53,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 20:05:53,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 20:05:54,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 20:05:54,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:05:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-05 20:05:54,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:05:55,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-12-05 20:05:55,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 107 [2022-12-05 20:05:55,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 13 [2022-12-05 20:05:56,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-05 20:05:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:05:56,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:05:57,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-05 20:05:57,561 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:05:57,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 76 [2022-12-05 20:05:57,589 INFO L167 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:05:57,590 INFO L172 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2022-12-05 20:05:57,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 20:05:57,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 135 [2022-12-05 20:06:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:06:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:06:04,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308606997] [2022-12-05 20:06:04,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-05 20:06:04,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769570855] [2022-12-05 20:06:04,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769570855] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:06:04,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-05 20:06:04,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 46 [2022-12-05 20:06:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605859636] [2022-12-05 20:06:04,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-05 20:06:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-05 20:06:04,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:06:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-05 20:06:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1896, Unknown=0, NotChecked=0, Total=2070 [2022-12-05 20:06:04,545 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 148 [2022-12-05 20:06:04,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 919 transitions, 10474 flow. Second operand has 46 states, 46 states have (on average 70.34782608695652) internal successors, (3236), 46 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 20:06:04,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:06:04,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 148 [2022-12-05 20:06:04,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:06:43,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-05 20:07:19,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Received shutdown request... [2022-12-05 20:07:30,955 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 20:07:30,955 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-05 20:07:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-12-05 20:07:31,007 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-12-05 20:07:31,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-05 20:07:31,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-05 20:07:31,208 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 67/148 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 40936 conditions, 4026 events (1814/4025 cut-off events. For 434728/434748 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35864 event pairs, 160 based on Foata normal form. 51/4436 useless extension candidates. Maximal degree in co-relation 40722. Up to 728 conditions per place.). [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-12-05 20:07:31,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-12-05 20:07:31,209 INFO L458 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:07:31,212 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:07:31,212 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:07:31,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:07:31 BasicIcfg [2022-12-05 20:07:31,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:07:31,214 INFO L158 Benchmark]: Toolchain (without parser) took 849730.49ms. Allocated memory was 189.8MB in the beginning and 809.5MB in the end (delta: 619.7MB). Free memory was 165.0MB in the beginning and 485.3MB in the end (delta: -320.3MB). Peak memory consumption was 298.7MB. Max. memory is 8.0GB. [2022-12-05 20:07:31,214 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 166.3MB in the beginning and 166.2MB in the end (delta: 91.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:07:31,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.88ms. Allocated memory is still 189.8MB. Free memory was 165.0MB in the beginning and 144.4MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-05 20:07:31,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.38ms. Allocated memory is still 189.8MB. Free memory was 144.4MB in the beginning and 141.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:07:31,215 INFO L158 Benchmark]: Boogie Preprocessor took 48.09ms. Allocated memory is still 189.8MB. Free memory was 141.8MB in the beginning and 140.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:07:31,215 INFO L158 Benchmark]: RCFGBuilder took 450.24ms. Allocated memory is still 189.8MB. Free memory was 140.2MB in the beginning and 121.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-05 20:07:31,215 INFO L158 Benchmark]: TraceAbstraction took 848840.93ms. Allocated memory was 189.8MB in the beginning and 809.5MB in the end (delta: 619.7MB). Free memory was 121.3MB in the beginning and 485.3MB in the end (delta: -364.0MB). Peak memory consumption was 254.7MB. Max. memory is 8.0GB. [2022-12-05 20:07:31,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 166.3MB in the beginning and 166.2MB in the end (delta: 91.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 334.88ms. Allocated memory is still 189.8MB. Free memory was 165.0MB in the beginning and 144.4MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.38ms. Allocated memory is still 189.8MB. Free memory was 144.4MB in the beginning and 141.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.09ms. Allocated memory is still 189.8MB. Free memory was 141.8MB in the beginning and 140.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 450.24ms. Allocated memory is still 189.8MB. Free memory was 140.2MB in the beginning and 121.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 848840.93ms. Allocated memory was 189.8MB in the beginning and 809.5MB in the end (delta: 619.7MB). Free memory was 121.3MB in the beginning and 485.3MB in the end (delta: -364.0MB). Peak memory consumption was 254.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 67/148 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 40936 conditions, 4026 events (1814/4025 cut-off events. For 434728/434748 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35864 event pairs, 160 based on Foata normal form. 51/4436 useless extension candidates. Maximal degree in co-relation 40722. Up to 728 conditions per place.). - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 67/148 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 40936 conditions, 4026 events (1814/4025 cut-off events. For 434728/434748 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35864 event pairs, 160 based on Foata normal form. 51/4436 useless extension candidates. Maximal degree in co-relation 40722. Up to 728 conditions per place.). - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 67/148 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 40936 conditions, 4026 events (1814/4025 cut-off events. For 434728/434748 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35864 event pairs, 160 based on Foata normal form. 51/4436 useless extension candidates. Maximal degree in co-relation 40722. Up to 728 conditions per place.). - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 67/148 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 40936 conditions, 4026 events (1814/4025 cut-off events. For 434728/434748 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35864 event pairs, 160 based on Foata normal form. 51/4436 useless extension candidates. Maximal degree in co-relation 40722. Up to 728 conditions per place.). - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (46states, 67/148 universal loopers) in iteration 13,while PetriNetUnfolder was constructing finite prefix that currently has 40936 conditions, 4026 events (1814/4025 cut-off events. For 434728/434748 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35864 event pairs, 160 based on Foata normal form. 51/4436 useless extension candidates. Maximal degree in co-relation 40722. Up to 728 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 212 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 848.7s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 787.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 8568 SdHoareTripleChecker+Valid, 111.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8568 mSDsluCounter, 6949 SdHoareTripleChecker+Invalid, 109.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6488 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15619 IncrementalHoareTripleChecker+Invalid, 15969 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 461 mSDtfsCounter, 15619 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2286 GetRequests, 1520 SyntacticMatches, 0 SemanticMatches, 766 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53570 ImplicationChecksByTransitivity, 693.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10474occurred in iteration=12, InterpolantAutomatonStates: 484, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 55.4s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1368 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1825 ConstructedInterpolants, 31 QuantifiedInterpolants, 33209 SizeOfPredicates, 113 NumberOfNonLiveVariables, 3142 ConjunctsInSsa, 257 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 23/301 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 could not prove your program: Timeout Completed graceful shutdown