/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/weaver/popl20-three-array-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:33:47,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:33:47,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:33:47,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:33:47,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:33:47,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:33:47,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:33:47,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:33:47,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:33:47,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:33:47,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:33:47,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:33:47,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:33:47,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:33:47,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:33:47,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:33:47,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:33:47,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:33:47,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:33:47,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:33:47,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:33:47,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:33:47,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:33:47,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:33:47,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:33:47,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:33:47,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:33:47,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:33:47,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:33:47,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:33:47,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:33:47,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:33:47,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:33:47,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:33:47,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:33:47,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:33:47,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:33:47,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:33:47,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:33:47,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:33:47,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:33:47,967 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 [2022-09-20 21:33:47,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:33:47,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:33:47,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:33:47,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:33:47,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:33:47,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:33:47,992 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:33:47,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:33:47,992 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:33:47,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:33:47,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:33:47,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:33:47,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:33:47,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:33:47,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:33:47,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:33:47,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:33:47,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:33:47,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:33:47,995 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:33:47,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:33:47,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:33:48,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:33:48,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:33:48,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:33:48,223 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:33:48,223 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:33:48,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2022-09-20 21:33:48,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01f460aa/d0d9e387292f410c9eb2d7821560e4b7/FLAGfc44d08c3 [2022-09-20 21:33:48,698 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:33:48,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2022-09-20 21:33:48,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01f460aa/d0d9e387292f410c9eb2d7821560e4b7/FLAGfc44d08c3 [2022-09-20 21:33:48,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c01f460aa/d0d9e387292f410c9eb2d7821560e4b7 [2022-09-20 21:33:48,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:33:48,733 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:33:48,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:33:48,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:33:48,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:33:48,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:33:48" (1/1) ... [2022-09-20 21:33:48,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdf9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:48, skipping insertion in model container [2022-09-20 21:33:48,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:33:48" (1/1) ... [2022-09-20 21:33:48,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:33:48,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:33:48,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-09-20 21:33:48,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:33:48,949 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:33:48,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-09-20 21:33:48,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:33:49,002 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:33:49,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49 WrapperNode [2022-09-20 21:33:49,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:33:49,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:33:49,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:33:49,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:33:49,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,053 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 232 [2022-09-20 21:33:49,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:33:49,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:33:49,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:33:49,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:33:49,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:33:49,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:33:49,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:33:49,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:33:49,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (1/1) ... [2022-09-20 21:33:49,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:33:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:33:49,114 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) [2022-09-20 21:33:49,118 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 [2022-09-20 21:33:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:33:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:33:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:33:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:33:49,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:33:49,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:33:49,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:33:49,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:33:49,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:33:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:33:49,145 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:33:49,210 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:33:49,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:33:49,500 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:33:49,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:33:49,551 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 21:33:49,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:33:49 BoogieIcfgContainer [2022-09-20 21:33:49,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:33:49,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:33:49,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:33:49,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:33:49,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:33:48" (1/3) ... [2022-09-20 21:33:49,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1f83d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:33:49, skipping insertion in model container [2022-09-20 21:33:49,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:33:49" (2/3) ... [2022-09-20 21:33:49,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1f83d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:33:49, skipping insertion in model container [2022-09-20 21:33:49,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:33:49" (3/3) ... [2022-09-20 21:33:49,558 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-09-20 21:33:49,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:33:49,571 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:33:49,571 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:33:49,651 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 21:33:49,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 315 transitions, 654 flow [2022-09-20 21:33:49,797 INFO L130 PetriNetUnfolder]: 27/312 cut-off events. [2022-09-20 21:33:49,798 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:33:49,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 312 events. 27/312 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 244. Up to 3 conditions per place. [2022-09-20 21:33:49,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 315 transitions, 654 flow [2022-09-20 21:33:49,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 301 transitions, 620 flow [2022-09-20 21:33:49,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:33:49,827 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;@346c3d83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:33:49,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 21:33:49,898 INFO L130 PetriNetUnfolder]: 27/300 cut-off events. [2022-09-20 21:33:49,899 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:33:49,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:49,900 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:49,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -924327526, now seen corresponding path program 1 times [2022-09-20 21:33:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:49,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485543477] [2022-09-20 21:33:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:33:50,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:50,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485543477] [2022-09-20 21:33:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485543477] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:33:50,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:33:50,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:33:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079032337] [2022-09-20 21:33:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:33:50,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:33:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:33:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:33:50,206 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 315 [2022-09-20 21:33:50,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 301 transitions, 620 flow. Second operand has 2 states, 2 states have (on average 292.5) internal successors, (585), 2 states have internal predecessors, (585), 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) [2022-09-20 21:33:50,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:50,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 315 [2022-09-20 21:33:50,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:50,272 INFO L130 PetriNetUnfolder]: 22/329 cut-off events. [2022-09-20 21:33:50,272 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-09-20 21:33:50,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 329 events. 22/329 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 381 event pairs, 7 based on Foata normal form. 36/338 useless extension candidates. Maximal degree in co-relation 233. Up to 28 conditions per place. [2022-09-20 21:33:50,276 INFO L137 encePairwiseOnDemand]: 297/315 looper letters, 8 selfloop transitions, 0 changer transitions 12/283 dead transitions. [2022-09-20 21:33:50,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 283 transitions, 600 flow [2022-09-20 21:33:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:33:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:33:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 602 transitions. [2022-09-20 21:33:50,291 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2022-09-20 21:33:50,292 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 602 transitions. [2022-09-20 21:33:50,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 602 transitions. [2022-09-20 21:33:50,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:50,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 602 transitions. [2022-09-20 21:33:50,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 301.0) internal successors, (602), 2 states have internal predecessors, (602), 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) [2022-09-20 21:33:50,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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) [2022-09-20 21:33:50,310 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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) [2022-09-20 21:33:50,312 INFO L175 Difference]: Start difference. First operand has 284 places, 301 transitions, 620 flow. Second operand 2 states and 602 transitions. [2022-09-20 21:33:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 283 transitions, 600 flow [2022-09-20 21:33:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 283 transitions, 588 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:33:50,323 INFO L231 Difference]: Finished difference. Result has 279 places, 271 transitions, 548 flow [2022-09-20 21:33:50,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=548, PETRI_PLACES=279, PETRI_TRANSITIONS=271} [2022-09-20 21:33:50,330 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, -5 predicate places. [2022-09-20 21:33:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 271 transitions, 548 flow [2022-09-20 21:33:50,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 292.5) internal successors, (585), 2 states have internal predecessors, (585), 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) [2022-09-20 21:33:50,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:50,331 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:50,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:33:50,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash 759378185, now seen corresponding path program 1 times [2022-09-20 21:33:50,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:50,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510577364] [2022-09-20 21:33:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:50,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:33:50,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510577364] [2022-09-20 21:33:50,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510577364] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:33:50,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:33:50,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:33:50,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610240193] [2022-09-20 21:33:50,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:33:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:33:50,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:33:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:33:50,646 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 315 [2022-09-20 21:33:50,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 271 transitions, 548 flow. Second operand has 8 states, 8 states have (on average 199.625) internal successors, (1597), 8 states have internal predecessors, (1597), 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) [2022-09-20 21:33:50,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:50,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 315 [2022-09-20 21:33:50,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:50,909 INFO L130 PetriNetUnfolder]: 202/783 cut-off events. [2022-09-20 21:33:50,910 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-09-20 21:33:50,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 783 events. 202/783 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3253 event pairs, 103 based on Foata normal form. 0/638 useless extension candidates. Maximal degree in co-relation 1154. Up to 333 conditions per place. [2022-09-20 21:33:50,915 INFO L137 encePairwiseOnDemand]: 297/315 looper letters, 91 selfloop transitions, 15 changer transitions 0/283 dead transitions. [2022-09-20 21:33:50,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 283 transitions, 784 flow [2022-09-20 21:33:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:33:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:33:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1629 transitions. [2022-09-20 21:33:50,918 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6464285714285715 [2022-09-20 21:33:50,919 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1629 transitions. [2022-09-20 21:33:50,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1629 transitions. [2022-09-20 21:33:50,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:50,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1629 transitions. [2022-09-20 21:33:50,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 203.625) internal successors, (1629), 8 states have internal predecessors, (1629), 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) [2022-09-20 21:33:50,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-09-20 21:33:50,927 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 315.0) internal successors, (2835), 9 states have internal predecessors, (2835), 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) [2022-09-20 21:33:50,927 INFO L175 Difference]: Start difference. First operand has 279 places, 271 transitions, 548 flow. Second operand 8 states and 1629 transitions. [2022-09-20 21:33:50,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 283 transitions, 784 flow [2022-09-20 21:33:50,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 283 transitions, 784 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:33:50,933 INFO L231 Difference]: Finished difference. Result has 275 places, 274 transitions, 602 flow [2022-09-20 21:33:50,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=275, PETRI_TRANSITIONS=274} [2022-09-20 21:33:50,934 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, -9 predicate places. [2022-09-20 21:33:50,935 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 274 transitions, 602 flow [2022-09-20 21:33:50,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 199.625) internal successors, (1597), 8 states have internal predecessors, (1597), 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) [2022-09-20 21:33:50,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:50,936 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:50,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:33:50,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 147123894, now seen corresponding path program 1 times [2022-09-20 21:33:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:50,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105047640] [2022-09-20 21:33:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:33:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:51,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105047640] [2022-09-20 21:33:51,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105047640] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:33:51,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:33:51,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-09-20 21:33:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229020734] [2022-09-20 21:33:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:33:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-09-20 21:33:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-09-20 21:33:51,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2022-09-20 21:33:51,256 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 315 [2022-09-20 21:33:51,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 274 transitions, 602 flow. Second operand has 21 states, 21 states have (on average 174.85714285714286) internal successors, (3672), 21 states have internal predecessors, (3672), 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) [2022-09-20 21:33:51,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:51,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 315 [2022-09-20 21:33:51,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:52,297 INFO L130 PetriNetUnfolder]: 765/2564 cut-off events. [2022-09-20 21:33:52,297 INFO L131 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2022-09-20 21:33:52,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 2564 events. 765/2564 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 18150 event pairs, 101 based on Foata normal form. 2/2208 useless extension candidates. Maximal degree in co-relation 3686. Up to 282 conditions per place. [2022-09-20 21:33:52,336 INFO L137 encePairwiseOnDemand]: 285/315 looper letters, 146 selfloop transitions, 31 changer transitions 20/357 dead transitions. [2022-09-20 21:33:52,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 357 transitions, 1173 flow [2022-09-20 21:33:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-20 21:33:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-20 21:33:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5638 transitions. [2022-09-20 21:33:52,347 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5593253968253968 [2022-09-20 21:33:52,347 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5638 transitions. [2022-09-20 21:33:52,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5638 transitions. [2022-09-20 21:33:52,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:52,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5638 transitions. [2022-09-20 21:33:52,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 176.1875) internal successors, (5638), 32 states have internal predecessors, (5638), 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) [2022-09-20 21:33:52,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 315.0) internal successors, (10395), 33 states have internal predecessors, (10395), 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) [2022-09-20 21:33:52,374 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 315.0) internal successors, (10395), 33 states have internal predecessors, (10395), 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) [2022-09-20 21:33:52,374 INFO L175 Difference]: Start difference. First operand has 275 places, 274 transitions, 602 flow. Second operand 32 states and 5638 transitions. [2022-09-20 21:33:52,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 357 transitions, 1173 flow [2022-09-20 21:33:52,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 357 transitions, 1149 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:33:52,380 INFO L231 Difference]: Finished difference. Result has 307 places, 285 transitions, 703 flow [2022-09-20 21:33:52,380 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=703, PETRI_PLACES=307, PETRI_TRANSITIONS=285} [2022-09-20 21:33:52,382 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2022-09-20 21:33:52,382 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 285 transitions, 703 flow [2022-09-20 21:33:52,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 174.85714285714286) internal successors, (3672), 21 states have internal predecessors, (3672), 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) [2022-09-20 21:33:52,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:52,384 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:52,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:33:52,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1010837465, now seen corresponding path program 1 times [2022-09-20 21:33:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:52,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576301331] [2022-09-20 21:33:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:33:52,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:52,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576301331] [2022-09-20 21:33:52,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576301331] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:52,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711757633] [2022-09-20 21:33:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:52,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:33:52,548 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) [2022-09-20 21:33:52,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:33:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:52,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:33:52,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:33:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:33:52,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:33:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:33:53,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711757633] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:33:53,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:33:53,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-20 21:33:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077702259] [2022-09-20 21:33:53,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:33:53,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:33:53,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:33:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:33:53,202 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 315 [2022-09-20 21:33:53,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 285 transitions, 703 flow. Second operand has 19 states, 19 states have (on average 240.26315789473685) internal successors, (4565), 19 states have internal predecessors, (4565), 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) [2022-09-20 21:33:53,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:53,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 315 [2022-09-20 21:33:53,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:54,058 INFO L130 PetriNetUnfolder]: 1489/3795 cut-off events. [2022-09-20 21:33:54,059 INFO L131 PetriNetUnfolder]: For 445/539 co-relation queries the response was YES. [2022-09-20 21:33:54,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6396 conditions, 3795 events. 1489/3795 cut-off events. For 445/539 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 24347 event pairs, 585 based on Foata normal form. 6/2910 useless extension candidates. Maximal degree in co-relation 6384. Up to 1092 conditions per place. [2022-09-20 21:33:54,077 INFO L137 encePairwiseOnDemand]: 286/315 looper letters, 133 selfloop transitions, 54 changer transitions 0/407 dead transitions. [2022-09-20 21:33:54,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 407 transitions, 1375 flow [2022-09-20 21:33:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 21:33:54,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 21:33:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4907 transitions. [2022-09-20 21:33:54,085 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7788888888888889 [2022-09-20 21:33:54,085 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4907 transitions. [2022-09-20 21:33:54,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4907 transitions. [2022-09-20 21:33:54,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:54,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4907 transitions. [2022-09-20 21:33:54,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 245.35) internal successors, (4907), 20 states have internal predecessors, (4907), 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) [2022-09-20 21:33:54,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 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) [2022-09-20 21:33:54,146 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 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) [2022-09-20 21:33:54,146 INFO L175 Difference]: Start difference. First operand has 307 places, 285 transitions, 703 flow. Second operand 20 states and 4907 transitions. [2022-09-20 21:33:54,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 407 transitions, 1375 flow [2022-09-20 21:33:54,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 407 transitions, 1331 flow, removed 5 selfloop flow, removed 21 redundant places. [2022-09-20 21:33:54,153 INFO L231 Difference]: Finished difference. Result has 307 places, 322 transitions, 974 flow [2022-09-20 21:33:54,153 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=974, PETRI_PLACES=307, PETRI_TRANSITIONS=322} [2022-09-20 21:33:54,154 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 23 predicate places. [2022-09-20 21:33:54,154 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 322 transitions, 974 flow [2022-09-20 21:33:54,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 240.26315789473685) internal successors, (4565), 19 states have internal predecessors, (4565), 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) [2022-09-20 21:33:54,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:54,155 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:54,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 21:33:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:54,358 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2143187183, now seen corresponding path program 1 times [2022-09-20 21:33:54,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:54,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151576564] [2022-09-20 21:33:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:33:54,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:54,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151576564] [2022-09-20 21:33:54,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151576564] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:54,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449964141] [2022-09-20 21:33:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:54,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:33:54,468 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) [2022-09-20 21:33:54,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:33:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:54,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:33:54,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:33:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:33:54,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:33:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:33:54,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449964141] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:33:54,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:33:54,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-20 21:33:54,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439656877] [2022-09-20 21:33:54,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:33:54,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:33:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:33:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:33:54,989 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 315 [2022-09-20 21:33:54,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 322 transitions, 974 flow. Second operand has 19 states, 19 states have (on average 237.52631578947367) internal successors, (4513), 19 states have internal predecessors, (4513), 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) [2022-09-20 21:33:54,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:54,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 315 [2022-09-20 21:33:54,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:55,983 INFO L130 PetriNetUnfolder]: 1561/3928 cut-off events. [2022-09-20 21:33:55,984 INFO L131 PetriNetUnfolder]: For 1442/1563 co-relation queries the response was YES. [2022-09-20 21:33:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7701 conditions, 3928 events. 1561/3928 cut-off events. For 1442/1563 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 26017 event pairs, 773 based on Foata normal form. 35/3331 useless extension candidates. Maximal degree in co-relation 7683. Up to 1568 conditions per place. [2022-09-20 21:33:56,006 INFO L137 encePairwiseOnDemand]: 286/315 looper letters, 72 selfloop transitions, 30 changer transitions 89/408 dead transitions. [2022-09-20 21:33:56,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 408 transitions, 1642 flow [2022-09-20 21:33:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 21:33:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 21:33:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4847 transitions. [2022-09-20 21:33:56,014 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7693650793650794 [2022-09-20 21:33:56,015 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4847 transitions. [2022-09-20 21:33:56,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4847 transitions. [2022-09-20 21:33:56,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:56,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4847 transitions. [2022-09-20 21:33:56,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 242.35) internal successors, (4847), 20 states have internal predecessors, (4847), 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) [2022-09-20 21:33:56,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 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) [2022-09-20 21:33:56,031 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 315.0) internal successors, (6615), 21 states have internal predecessors, (6615), 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) [2022-09-20 21:33:56,031 INFO L175 Difference]: Start difference. First operand has 307 places, 322 transitions, 974 flow. Second operand 20 states and 4847 transitions. [2022-09-20 21:33:56,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 408 transitions, 1642 flow [2022-09-20 21:33:56,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 408 transitions, 1605 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-09-20 21:33:56,040 INFO L231 Difference]: Finished difference. Result has 327 places, 297 transitions, 872 flow [2022-09-20 21:33:56,041 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=872, PETRI_PLACES=327, PETRI_TRANSITIONS=297} [2022-09-20 21:33:56,041 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 43 predicate places. [2022-09-20 21:33:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 297 transitions, 872 flow [2022-09-20 21:33:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 237.52631578947367) internal successors, (4513), 19 states have internal predecessors, (4513), 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) [2022-09-20 21:33:56,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:56,043 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:56,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:33:56,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:56,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash 631866536, now seen corresponding path program 2 times [2022-09-20 21:33:56,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:56,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194691805] [2022-09-20 21:33:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:56,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-09-20 21:33:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:56,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194691805] [2022-09-20 21:33:56,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194691805] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:56,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546254564] [2022-09-20 21:33:56,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:33:56,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:56,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:33:56,448 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) [2022-09-20 21:33:56,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:33:56,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:33:56,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:33:56,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:33:56,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:33:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-09-20 21:33:56,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:33:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-09-20 21:33:56,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546254564] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:56,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:33:56,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-09-20 21:33:56,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749024114] [2022-09-20 21:33:56,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:33:56,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:33:56,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:56,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:33:56,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:33:56,876 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 315 [2022-09-20 21:33:56,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 297 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 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) [2022-09-20 21:33:56,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:56,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 315 [2022-09-20 21:33:56,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:57,223 INFO L130 PetriNetUnfolder]: 826/1975 cut-off events. [2022-09-20 21:33:57,223 INFO L131 PetriNetUnfolder]: For 1591/1642 co-relation queries the response was YES. [2022-09-20 21:33:57,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1975 events. 826/1975 cut-off events. For 1591/1642 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11652 event pairs, 220 based on Foata normal form. 2/1702 useless extension candidates. Maximal degree in co-relation 4604. Up to 701 conditions per place. [2022-09-20 21:33:57,237 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 78 selfloop transitions, 10 changer transitions 0/309 dead transitions. [2022-09-20 21:33:57,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 1100 flow [2022-09-20 21:33:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:33:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:33:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2444 transitions. [2022-09-20 21:33:57,241 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7758730158730158 [2022-09-20 21:33:57,242 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2444 transitions. [2022-09-20 21:33:57,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2444 transitions. [2022-09-20 21:33:57,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:57,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2444 transitions. [2022-09-20 21:33:57,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 244.4) internal successors, (2444), 10 states have internal predecessors, (2444), 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) [2022-09-20 21:33:57,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-09-20 21:33:57,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-09-20 21:33:57,248 INFO L175 Difference]: Start difference. First operand has 327 places, 297 transitions, 872 flow. Second operand 10 states and 2444 transitions. [2022-09-20 21:33:57,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 1100 flow [2022-09-20 21:33:57,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 309 transitions, 1019 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-09-20 21:33:57,255 INFO L231 Difference]: Finished difference. Result has 303 places, 299 transitions, 840 flow [2022-09-20 21:33:57,256 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=840, PETRI_PLACES=303, PETRI_TRANSITIONS=299} [2022-09-20 21:33:57,256 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 19 predicate places. [2022-09-20 21:33:57,256 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 299 transitions, 840 flow [2022-09-20 21:33:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 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) [2022-09-20 21:33:57,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:57,257 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:57,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 21:33:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:57,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1786427132, now seen corresponding path program 1 times [2022-09-20 21:33:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:57,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138479380] [2022-09-20 21:33:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-20 21:33:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:57,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138479380] [2022-09-20 21:33:57,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138479380] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:57,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862595976] [2022-09-20 21:33:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:57,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:33:57,604 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) [2022-09-20 21:33:57,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:33:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:57,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:33:57,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:33:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-20 21:33:58,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:33:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-20 21:33:58,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862595976] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:58,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:33:58,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-09-20 21:33:58,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330095366] [2022-09-20 21:33:58,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:33:58,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:33:58,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:33:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:33:58,336 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 315 [2022-09-20 21:33:58,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 299 transitions, 840 flow. Second operand has 9 states, 9 states have (on average 239.77777777777777) internal successors, (2158), 9 states have internal predecessors, (2158), 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) [2022-09-20 21:33:58,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:58,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 315 [2022-09-20 21:33:58,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:33:58,833 INFO L130 PetriNetUnfolder]: 1352/3191 cut-off events. [2022-09-20 21:33:58,833 INFO L131 PetriNetUnfolder]: For 1676/2026 co-relation queries the response was YES. [2022-09-20 21:33:58,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 3191 events. 1352/3191 cut-off events. For 1676/2026 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21713 event pairs, 315 based on Foata normal form. 379/3354 useless extension candidates. Maximal degree in co-relation 6959. Up to 1235 conditions per place. [2022-09-20 21:33:58,855 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 85 selfloop transitions, 10 changer transitions 0/312 dead transitions. [2022-09-20 21:33:58,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 1080 flow [2022-09-20 21:33:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:33:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:33:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2409 transitions. [2022-09-20 21:33:58,860 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-09-20 21:33:58,860 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2409 transitions. [2022-09-20 21:33:58,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2409 transitions. [2022-09-20 21:33:58,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:33:58,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2409 transitions. [2022-09-20 21:33:58,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.9) internal successors, (2409), 10 states have internal predecessors, (2409), 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) [2022-09-20 21:33:58,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-09-20 21:33:58,869 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-09-20 21:33:58,869 INFO L175 Difference]: Start difference. First operand has 303 places, 299 transitions, 840 flow. Second operand 10 states and 2409 transitions. [2022-09-20 21:33:58,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 1080 flow [2022-09-20 21:33:58,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 312 transitions, 1069 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-20 21:33:58,879 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 863 flow [2022-09-20 21:33:58,880 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=863, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2022-09-20 21:33:58,880 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 26 predicate places. [2022-09-20 21:33:58,880 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 863 flow [2022-09-20 21:33:58,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 239.77777777777777) internal successors, (2158), 9 states have internal predecessors, (2158), 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) [2022-09-20 21:33:58,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:33:58,881 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:33:58,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 21:33:59,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:59,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:33:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:33:59,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1542236568, now seen corresponding path program 1 times [2022-09-20 21:33:59,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:33:59,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740337343] [2022-09-20 21:33:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:59,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:33:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-20 21:33:59,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:33:59,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740337343] [2022-09-20 21:33:59,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740337343] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:59,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280797031] [2022-09-20 21:33:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:33:59,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:33:59,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:33:59,216 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) [2022-09-20 21:33:59,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:33:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:33:59,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 21:33:59,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:33:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-20 21:33:59,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:33:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-20 21:33:59,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280797031] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:33:59,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:33:59,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-09-20 21:33:59,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421077631] [2022-09-20 21:33:59,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:33:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 21:33:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:33:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 21:33:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:33:59,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 315 [2022-09-20 21:33:59,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 863 flow. Second operand has 9 states, 9 states have (on average 242.66666666666666) internal successors, (2184), 9 states have internal predecessors, (2184), 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) [2022-09-20 21:33:59,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:33:59,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 315 [2022-09-20 21:33:59,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:34:00,035 INFO L130 PetriNetUnfolder]: 778/1843 cut-off events. [2022-09-20 21:34:00,035 INFO L131 PetriNetUnfolder]: For 1532/1944 co-relation queries the response was YES. [2022-09-20 21:34:00,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 1843 events. 778/1843 cut-off events. For 1532/1944 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10345 event pairs, 159 based on Foata normal form. 437/2091 useless extension candidates. Maximal degree in co-relation 4115. Up to 756 conditions per place. [2022-09-20 21:34:00,047 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 81 selfloop transitions, 10 changer transitions 0/309 dead transitions. [2022-09-20 21:34:00,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 1077 flow [2022-09-20 21:34:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 21:34:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 21:34:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2435 transitions. [2022-09-20 21:34:00,050 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.773015873015873 [2022-09-20 21:34:00,050 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2435 transitions. [2022-09-20 21:34:00,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2435 transitions. [2022-09-20 21:34:00,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:34:00,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2435 transitions. [2022-09-20 21:34:00,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 243.5) internal successors, (2435), 10 states have internal predecessors, (2435), 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) [2022-09-20 21:34:00,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-09-20 21:34:00,056 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-09-20 21:34:00,056 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 863 flow. Second operand 10 states and 2435 transitions. [2022-09-20 21:34:00,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 1077 flow [2022-09-20 21:34:00,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 1060 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 21:34:00,063 INFO L231 Difference]: Finished difference. Result has 312 places, 299 transitions, 871 flow [2022-09-20 21:34:00,063 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=871, PETRI_PLACES=312, PETRI_TRANSITIONS=299} [2022-09-20 21:34:00,064 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 28 predicate places. [2022-09-20 21:34:00,064 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 299 transitions, 871 flow [2022-09-20 21:34:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 242.66666666666666) internal successors, (2184), 9 states have internal predecessors, (2184), 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) [2022-09-20 21:34:00,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:34:00,065 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:34:00,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-20 21:34:00,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:34:00,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:34:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:34:00,282 INFO L85 PathProgramCache]: Analyzing trace with hash -628796937, now seen corresponding path program 1 times [2022-09-20 21:34:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:34:00,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555474902] [2022-09-20 21:34:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:34:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:34:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:34:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-09-20 21:34:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:34:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555474902] [2022-09-20 21:34:01,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555474902] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:34:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088399944] [2022-09-20 21:34:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:34:01,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:34:01,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:34:01,537 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) [2022-09-20 21:34:01,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 21:34:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:34:01,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 80 conjunts are in the unsatisfiable core [2022-09-20 21:34:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:34:01,884 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:34:01,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 25 [2022-09-20 21:34:02,980 INFO L356 Elim1Store]: treesize reduction 56, result has 45.6 percent of original size [2022-09-20 21:34:02,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 53 treesize of output 71 [2022-09-20 21:34:13,729 WARN L233 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 85 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:34:14,412 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:34:14,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 199 treesize of output 263 [2022-09-20 21:34:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-09-20 21:34:14,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:35:39,435 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:35:39,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 121 [2022-09-20 21:35:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-09-20 21:35:40,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088399944] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:35:40,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:35:40,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 32, 29] total 90 [2022-09-20 21:35:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870725012] [2022-09-20 21:35:40,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:35:40,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-09-20 21:35:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:35:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-09-20 21:35:40,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=7555, Unknown=42, NotChecked=0, Total=8010 [2022-09-20 21:35:40,331 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 315 [2022-09-20 21:35:40,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 299 transitions, 871 flow. Second operand has 90 states, 90 states have (on average 110.08888888888889) internal successors, (9908), 90 states have internal predecessors, (9908), 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) [2022-09-20 21:35:40,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:35:40,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 315 [2022-09-20 21:35:40,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:36:09,214 INFO L130 PetriNetUnfolder]: 36729/57747 cut-off events. [2022-09-20 21:36:09,215 INFO L131 PetriNetUnfolder]: For 43536/43536 co-relation queries the response was YES. [2022-09-20 21:36:09,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143128 conditions, 57747 events. 36729/57747 cut-off events. For 43536/43536 co-relation queries the response was YES. Maximal size of possible extension queue 1844. Compared 454913 event pairs, 2937 based on Foata normal form. 1/53789 useless extension candidates. Maximal degree in co-relation 143108. Up to 8985 conditions per place. [2022-09-20 21:36:09,696 INFO L137 encePairwiseOnDemand]: 226/315 looper letters, 885 selfloop transitions, 349 changer transitions 20/1347 dead transitions. [2022-09-20 21:36:09,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 1347 transitions, 6881 flow [2022-09-20 21:36:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-09-20 21:36:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2022-09-20 21:36:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 12428 transitions. [2022-09-20 21:36:09,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3722072476789458 [2022-09-20 21:36:09,714 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 12428 transitions. [2022-09-20 21:36:09,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 12428 transitions. [2022-09-20 21:36:09,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:36:09,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 12428 transitions. [2022-09-20 21:36:09,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 117.24528301886792) internal successors, (12428), 106 states have internal predecessors, (12428), 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) [2022-09-20 21:36:09,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 315.0) internal successors, (33705), 107 states have internal predecessors, (33705), 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) [2022-09-20 21:36:09,847 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 315.0) internal successors, (33705), 107 states have internal predecessors, (33705), 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) [2022-09-20 21:36:09,847 INFO L175 Difference]: Start difference. First operand has 312 places, 299 transitions, 871 flow. Second operand 106 states and 12428 transitions. [2022-09-20 21:36:09,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 1347 transitions, 6881 flow [2022-09-20 21:36:10,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1347 transitions, 6815 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 21:36:10,480 INFO L231 Difference]: Finished difference. Result has 458 places, 611 transitions, 3215 flow [2022-09-20 21:36:10,480 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=3215, PETRI_PLACES=458, PETRI_TRANSITIONS=611} [2022-09-20 21:36:10,481 INFO L287 CegarLoopForPetriNet]: 284 programPoint places, 174 predicate places. [2022-09-20 21:36:10,481 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 611 transitions, 3215 flow [2022-09-20 21:36:10,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 110.08888888888889) internal successors, (9908), 90 states have internal predecessors, (9908), 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) [2022-09-20 21:36:10,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:36:10,483 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:36:10,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-20 21:36:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:36:10,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:36:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:36:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1035095843, now seen corresponding path program 2 times [2022-09-20 21:36:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:36:10,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296807079] [2022-09-20 21:36:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:36:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:36:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:36:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:36:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:36:13,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296807079] [2022-09-20 21:36:13,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296807079] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:36:13,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198804225] [2022-09-20 21:36:13,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:36:13,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:36:13,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:36:13,863 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) [2022-09-20 21:36:13,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 21:36:14,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:36:14,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:36:14,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 102 conjunts are in the unsatisfiable core [2022-09-20 21:36:14,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:36:14,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-09-20 21:36:15,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-09-20 21:36:16,091 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 21:36:16,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-20 21:36:16,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:36:16,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:36:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:36:18,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:36:18,696 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-09-20 21:36:18,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-09-20 21:36:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:36:19,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:36:19,035 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-09-20 21:36:19,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-09-20 21:36:19,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:36:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:36:19,865 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-09-20 21:36:19,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2022-09-20 21:36:20,182 INFO L356 Elim1Store]: treesize reduction 94, result has 55.5 percent of original size [2022-09-20 21:36:20,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 152 [2022-09-20 21:38:59,350 WARN L233 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 380 DAG size of output: 160 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:39:48,934 WARN L233 SmtUtils]: Spent 42.97s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:42:06,510 WARN L233 SmtUtils]: Spent 2.17m on a formula simplification. DAG size of input: 2371 DAG size of output: 2215 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-09-20 21:42:06,518 INFO L356 Elim1Store]: treesize reduction 1222, result has 86.6 percent of original size [2022-09-20 21:42:06,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 41 select indices, 41 select index equivalence classes, 1 disjoint index pairs (out of 820 index pairs), introduced 41 new quantified variables, introduced 820 case distinctions, treesize of input 1248 treesize of output 8472 Received shutdown request... [2022-09-20 21:48:16,358 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:48:16,358 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 [2022-09-20 21:48:16,400 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-09-20 21:48:16,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 21:48:16,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-20 21:48:16,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:48:16,603 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 282 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 46ms.. [2022-09-20 21:48:16,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 21:48:16,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 21:48:16,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 21:48:16,605 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-09-20 21:48:16,610 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:48:16,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:48:16,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:48:16 BasicIcfg [2022-09-20 21:48:16,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:48:16,613 INFO L158 Benchmark]: Toolchain (without parser) took 867880.15ms. Allocated memory was 186.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 160.1MB in the beginning and 748.2MB in the end (delta: -588.2MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-09-20 21:48:16,613 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:48:16,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.21ms. Allocated memory was 186.6MB in the beginning and 262.1MB in the end (delta: 75.5MB). Free memory was 160.1MB in the beginning and 231.0MB in the end (delta: -70.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-09-20 21:48:16,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.02ms. Allocated memory is still 262.1MB. Free memory was 231.0MB in the beginning and 228.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:48:16,614 INFO L158 Benchmark]: Boogie Preprocessor took 25.73ms. Allocated memory is still 262.1MB. Free memory was 228.5MB in the beginning and 226.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:48:16,614 INFO L158 Benchmark]: RCFGBuilder took 471.89ms. Allocated memory is still 262.1MB. Free memory was 226.4MB in the beginning and 199.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-09-20 21:48:16,614 INFO L158 Benchmark]: TraceAbstraction took 867059.06ms. Allocated memory was 262.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 198.6MB in the beginning and 748.2MB in the end (delta: -549.7MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2022-09-20 21:48:16,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 269.21ms. Allocated memory was 186.6MB in the beginning and 262.1MB in the end (delta: 75.5MB). Free memory was 160.1MB in the beginning and 231.0MB in the end (delta: -70.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.02ms. Allocated memory is still 262.1MB. Free memory was 231.0MB in the beginning and 228.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.73ms. Allocated memory is still 262.1MB. Free memory was 228.5MB in the beginning and 226.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 471.89ms. Allocated memory is still 262.1MB. Free memory was 226.4MB in the beginning and 199.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 867059.06ms. Allocated memory was 262.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 198.6MB in the beginning and 748.2MB in the end (delta: -549.7MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 282 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 46ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 282 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 46ms.. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 282 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 46ms.. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 282 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 46ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 334 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 866.9s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7227 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7227 mSDsluCounter, 12224 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4551 IncrementalHoareTripleChecker+Unchecked, 13266 mSDsCounter, 444 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10887 IncrementalHoareTripleChecker+Invalid, 15882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 444 mSolverCounterUnsat, 556 mSDtfsCounter, 10887 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3482 GetRequests, 3091 SyntacticMatches, 14 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11909 ImplicationChecksByTransitivity, 116.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3215occurred in iteration=9, InterpolantAutomatonStates: 218, 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, 0.7s SatisfiabilityAnalysisTime, 102.9s InterpolantComputationTime, 3854 NumberOfCodeBlocks, 3854 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5424 ConstructedInterpolants, 14 QuantifiedInterpolants, 19345 SizeOfPredicates, 89 NumberOfNonLiveVariables, 3368 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 295/375 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