/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/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:00:29,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:00:29,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:00:29,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:00:29,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:00:29,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:00:29,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:00:29,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:00:29,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:00:29,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:00:29,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:00:29,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:00:29,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:00:29,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:00:29,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:00:29,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:00:29,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:00:29,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:00:29,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:00:29,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:00:29,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:00:29,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:00:29,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:00:29,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:00:29,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:00:29,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:00:29,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:00:29,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:00:29,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:00:29,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:00:29,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:00:29,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:00:29,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:00:29,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:00:29,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:00:29,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:00:29,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:00:29,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:00:29,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:00:29,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:00:29,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:00:29,558 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 23:00:29,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:00:29,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:00:29,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:00:29,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:00:29,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:00:29,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:00:29,576 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:00:29,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:00:29,576 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:00:29,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:00:29,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:00:29,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:00:29,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:00:29,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:00:29,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:00:29,578 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:00:29,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:00:29,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:00:29,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:00:29,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:00:29,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:00:29,778 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:00:29,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-09-20 23:00:29,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53002839c/f88d5dd8f681455bb0ffcc997f4a7e3a/FLAG1cc50e230 [2022-09-20 23:00:30,209 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:00:30,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-09-20 23:00:30,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53002839c/f88d5dd8f681455bb0ffcc997f4a7e3a/FLAG1cc50e230 [2022-09-20 23:00:30,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53002839c/f88d5dd8f681455bb0ffcc997f4a7e3a [2022-09-20 23:00:30,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:00:30,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:00:30,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:00:30,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:00:30,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:00:30,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240b88ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30, skipping insertion in model container [2022-09-20 23:00:30,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:00:30,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:00:30,840 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/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-09-20 23:00:30,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:00:30,853 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:00:30,876 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/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-09-20 23:00:30,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:00:30,894 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:00:30,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30 WrapperNode [2022-09-20 23:00:30,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:00:30,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:00:30,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:00:30,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:00:30,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,962 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 386 [2022-09-20 23:00:30,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:00:30,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:00:30,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:00:30,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:00:30,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:30,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:00:30,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:00:30,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:00:30,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:00:30,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (1/1) ... [2022-09-20 23:00:31,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:00:31,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:00:31,026 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 23:00:31,028 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 23:00:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:00:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:00:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:00:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:00:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:00:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:00:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:00:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:00:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:00:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:00:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 23:00:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 23:00:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:00:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-09-20 23:00:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-09-20 23:00:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-09-20 23:00:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-09-20 23:00:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:00:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:00:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:00:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:00:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:00:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:00:31,061 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 23:00:31,215 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:00:31,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:00:31,702 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:00:31,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:00:31,923 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-20 23:00:31,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:00:31 BoogieIcfgContainer [2022-09-20 23:00:31,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:00:31,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:00:31,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:00:31,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:00:31,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:00:30" (1/3) ... [2022-09-20 23:00:31,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a17655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:00:31, skipping insertion in model container [2022-09-20 23:00:31,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:00:30" (2/3) ... [2022-09-20 23:00:31,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a17655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:00:31, skipping insertion in model container [2022-09-20 23:00:31,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:00:31" (3/3) ... [2022-09-20 23:00:31,933 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-09-20 23:00:31,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:00:31,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:00:31,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:00:32,080 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-09-20 23:00:32,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 311 transitions, 694 flow [2022-09-20 23:00:32,296 INFO L130 PetriNetUnfolder]: 21/265 cut-off events. [2022-09-20 23:00:32,297 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 23:00:32,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 265 events. 21/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 290 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 225. Up to 3 conditions per place. [2022-09-20 23:00:32,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 311 transitions, 694 flow [2022-09-20 23:00:32,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 256 transitions, 560 flow [2022-09-20 23:00:32,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:00:32,329 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;@79c11acb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:00:32,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-09-20 23:00:32,385 INFO L130 PetriNetUnfolder]: 21/255 cut-off events. [2022-09-20 23:00:32,385 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 23:00:32,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:32,386 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] [2022-09-20 23:00:32,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:32,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1922212919, now seen corresponding path program 1 times [2022-09-20 23:00:32,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:32,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617248307] [2022-09-20 23:00:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:32,691 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 23:00:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:32,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617248307] [2022-09-20 23:00:32,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617248307] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:00:32,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:00:32,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:00:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747417638] [2022-09-20 23:00:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:00:32,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:00:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:00:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:00:32,737 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-09-20 23:00:32,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 256 transitions, 560 flow. Second operand has 2 states, 2 states have (on average 273.5) internal successors, (547), 2 states have internal predecessors, (547), 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 23:00:32,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:32,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-09-20 23:00:32,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:33,050 INFO L130 PetriNetUnfolder]: 409/1072 cut-off events. [2022-09-20 23:00:33,051 INFO L131 PetriNetUnfolder]: For 345/355 co-relation queries the response was YES. [2022-09-20 23:00:33,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1072 events. 409/1072 cut-off events. For 345/355 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4707 event pairs, 192 based on Foata normal form. 170/1112 useless extension candidates. Maximal degree in co-relation 1710. Up to 553 conditions per place. [2022-09-20 23:00:33,067 INFO L137 encePairwiseOnDemand]: 303/315 looper letters, 26 selfloop transitions, 0 changer transitions 5/244 dead transitions. [2022-09-20 23:00:33,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 244 transitions, 588 flow [2022-09-20 23:00:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:00:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:00:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 566 transitions. [2022-09-20 23:00:33,089 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8984126984126984 [2022-09-20 23:00:33,090 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 566 transitions. [2022-09-20 23:00:33,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 566 transitions. [2022-09-20 23:00:33,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:33,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 566 transitions. [2022-09-20 23:00:33,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 283.0) internal successors, (566), 2 states have internal predecessors, (566), 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 23:00:33,108 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 23:00:33,109 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 23:00:33,111 INFO L175 Difference]: Start difference. First operand has 254 places, 256 transitions, 560 flow. Second operand 2 states and 566 transitions. [2022-09-20 23:00:33,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 244 transitions, 588 flow [2022-09-20 23:00:33,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 556 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-09-20 23:00:33,123 INFO L231 Difference]: Finished difference. Result has 243 places, 239 transitions, 494 flow [2022-09-20 23:00:33,125 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=243, PETRI_TRANSITIONS=239} [2022-09-20 23:00:33,128 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, -11 predicate places. [2022-09-20 23:00:33,129 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 239 transitions, 494 flow [2022-09-20 23:00:33,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 273.5) internal successors, (547), 2 states have internal predecessors, (547), 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 23:00:33,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:33,130 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] [2022-09-20 23:00:33,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:00:33,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 928801593, now seen corresponding path program 1 times [2022-09-20 23:00:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:33,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305275038] [2022-09-20 23:00:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:33,728 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 23:00:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305275038] [2022-09-20 23:00:33,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305275038] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:00:33,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:00:33,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 23:00:33,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061053435] [2022-09-20 23:00:33,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:00:33,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 23:00:33,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 23:00:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-09-20 23:00:33,734 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 315 [2022-09-20 23:00:33,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 239 transitions, 494 flow. Second operand has 11 states, 11 states have (on average 213.27272727272728) internal successors, (2346), 11 states have internal predecessors, (2346), 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 23:00:33,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:33,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 315 [2022-09-20 23:00:33,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:34,552 INFO L130 PetriNetUnfolder]: 782/1962 cut-off events. [2022-09-20 23:00:34,552 INFO L131 PetriNetUnfolder]: For 156/168 co-relation queries the response was YES. [2022-09-20 23:00:34,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3306 conditions, 1962 events. 782/1962 cut-off events. For 156/168 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 11042 event pairs, 329 based on Foata normal form. 52/1788 useless extension candidates. Maximal degree in co-relation 3303. Up to 759 conditions per place. [2022-09-20 23:00:34,567 INFO L137 encePairwiseOnDemand]: 301/315 looper letters, 74 selfloop transitions, 4 changer transitions 69/311 dead transitions. [2022-09-20 23:00:34,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 311 transitions, 967 flow [2022-09-20 23:00:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 23:00:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 23:00:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2646 transitions. [2022-09-20 23:00:34,573 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-09-20 23:00:34,573 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2646 transitions. [2022-09-20 23:00:34,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2646 transitions. [2022-09-20 23:00:34,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:34,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2646 transitions. [2022-09-20 23:00:34,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.5) internal successors, (2646), 12 states have internal predecessors, (2646), 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 23:00:34,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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 23:00:34,588 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 315.0) internal successors, (4095), 13 states have internal predecessors, (4095), 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 23:00:34,588 INFO L175 Difference]: Start difference. First operand has 243 places, 239 transitions, 494 flow. Second operand 12 states and 2646 transitions. [2022-09-20 23:00:34,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 311 transitions, 967 flow [2022-09-20 23:00:34,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 311 transitions, 967 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:00:34,597 INFO L231 Difference]: Finished difference. Result has 256 places, 239 transitions, 524 flow [2022-09-20 23:00:34,598 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=524, PETRI_PLACES=256, PETRI_TRANSITIONS=239} [2022-09-20 23:00:34,599 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 2 predicate places. [2022-09-20 23:00:34,599 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 239 transitions, 524 flow [2022-09-20 23:00:34,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 213.27272727272728) internal successors, (2346), 11 states have internal predecessors, (2346), 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 23:00:34,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:34,601 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 23:00:34,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:00:34,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 545395359, now seen corresponding path program 1 times [2022-09-20 23:00:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:34,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825418432] [2022-09-20 23:00:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:34,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:00:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:35,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825418432] [2022-09-20 23:00:35,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825418432] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:00:35,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:00:35,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 23:00:35,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444102042] [2022-09-20 23:00:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:00:35,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 23:00:35,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:35,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 23:00:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-09-20 23:00:35,162 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 315 [2022-09-20 23:00:35,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 239 transitions, 524 flow. Second operand has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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 23:00:35,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:35,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 315 [2022-09-20 23:00:35,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:36,069 INFO L130 PetriNetUnfolder]: 1171/3159 cut-off events. [2022-09-20 23:00:36,069 INFO L131 PetriNetUnfolder]: For 425/434 co-relation queries the response was YES. [2022-09-20 23:00:36,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5277 conditions, 3159 events. 1171/3159 cut-off events. For 425/434 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21784 event pairs, 260 based on Foata normal form. 1/2819 useless extension candidates. Maximal degree in co-relation 5266. Up to 639 conditions per place. [2022-09-20 23:00:36,094 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 110 selfloop transitions, 12 changer transitions 8/312 dead transitions. [2022-09-20 23:00:36,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 312 transitions, 979 flow [2022-09-20 23:00:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 23:00:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 23:00:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2411 transitions. [2022-09-20 23:00:36,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-09-20 23:00:36,100 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2411 transitions. [2022-09-20 23:00:36,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2411 transitions. [2022-09-20 23:00:36,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:36,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2411 transitions. [2022-09-20 23:00:36,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 241.1) internal successors, (2411), 10 states have internal predecessors, (2411), 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 23:00:36,111 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 23:00:36,112 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 23:00:36,112 INFO L175 Difference]: Start difference. First operand has 256 places, 239 transitions, 524 flow. Second operand 10 states and 2411 transitions. [2022-09-20 23:00:36,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 312 transitions, 979 flow [2022-09-20 23:00:36,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 312 transitions, 961 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-09-20 23:00:36,120 INFO L231 Difference]: Finished difference. Result has 254 places, 247 transitions, 577 flow [2022-09-20 23:00:36,120 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=254, PETRI_TRANSITIONS=247} [2022-09-20 23:00:36,121 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 0 predicate places. [2022-09-20 23:00:36,121 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 247 transitions, 577 flow [2022-09-20 23:00:36,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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 23:00:36,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:36,122 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 23:00:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:00:36,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2092391372, now seen corresponding path program 1 times [2022-09-20 23:00:36,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:36,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555560484] [2022-09-20 23:00:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:00:36,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:36,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555560484] [2022-09-20 23:00:36,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555560484] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:00:36,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:00:36,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 23:00:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891468551] [2022-09-20 23:00:36,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:00:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 23:00:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 23:00:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-09-20 23:00:36,422 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 315 [2022-09-20 23:00:36,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 247 transitions, 577 flow. Second operand has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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 23:00:36,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:36,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 315 [2022-09-20 23:00:36,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:37,221 INFO L130 PetriNetUnfolder]: 1171/3117 cut-off events. [2022-09-20 23:00:37,221 INFO L131 PetriNetUnfolder]: For 935/947 co-relation queries the response was YES. [2022-09-20 23:00:37,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5950 conditions, 3117 events. 1171/3117 cut-off events. For 935/947 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21273 event pairs, 265 based on Foata normal form. 1/2780 useless extension candidates. Maximal degree in co-relation 5939. Up to 639 conditions per place. [2022-09-20 23:00:37,254 INFO L137 encePairwiseOnDemand]: 302/315 looper letters, 105 selfloop transitions, 14 changer transitions 8/309 dead transitions. [2022-09-20 23:00:37,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 309 transitions, 1035 flow [2022-09-20 23:00:37,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 23:00:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 23:00:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2406 transitions. [2022-09-20 23:00:37,259 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-09-20 23:00:37,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2406 transitions. [2022-09-20 23:00:37,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2406 transitions. [2022-09-20 23:00:37,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:37,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2406 transitions. [2022-09-20 23:00:37,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.6) internal successors, (2406), 10 states have internal predecessors, (2406), 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 23:00:37,270 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 23:00:37,271 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 23:00:37,271 INFO L175 Difference]: Start difference. First operand has 254 places, 247 transitions, 577 flow. Second operand 10 states and 2406 transitions. [2022-09-20 23:00:37,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 309 transitions, 1035 flow [2022-09-20 23:00:37,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 309 transitions, 1015 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-09-20 23:00:37,279 INFO L231 Difference]: Finished difference. Result has 260 places, 250 transitions, 630 flow [2022-09-20 23:00:37,279 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=630, PETRI_PLACES=260, PETRI_TRANSITIONS=250} [2022-09-20 23:00:37,280 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 6 predicate places. [2022-09-20 23:00:37,280 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 250 transitions, 630 flow [2022-09-20 23:00:37,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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 23:00:37,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:37,281 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] [2022-09-20 23:00:37,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 23:00:37,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 711109274, now seen corresponding path program 1 times [2022-09-20 23:00:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:37,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961837602] [2022-09-20 23:00:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:00:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:37,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961837602] [2022-09-20 23:00:37,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961837602] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:00:37,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:00:37,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:00:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335501722] [2022-09-20 23:00:37,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:00:37,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:00:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:00:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:00:37,515 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 315 [2022-09-20 23:00:37,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 250 transitions, 630 flow. Second operand has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 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 23:00:37,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:37,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 315 [2022-09-20 23:00:37,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:38,580 INFO L130 PetriNetUnfolder]: 1971/4724 cut-off events. [2022-09-20 23:00:38,580 INFO L131 PetriNetUnfolder]: For 2276/2285 co-relation queries the response was YES. [2022-09-20 23:00:38,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 4724 events. 1971/4724 cut-off events. For 2276/2285 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 34842 event pairs, 262 based on Foata normal form. 3/4161 useless extension candidates. Maximal degree in co-relation 9992. Up to 1662 conditions per place. [2022-09-20 23:00:38,619 INFO L137 encePairwiseOnDemand]: 304/315 looper letters, 113 selfloop transitions, 9 changer transitions 75/377 dead transitions. [2022-09-20 23:00:38,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 377 transitions, 1498 flow [2022-09-20 23:00:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:00:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:00:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2643 transitions. [2022-09-20 23:00:38,626 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7627705627705628 [2022-09-20 23:00:38,626 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2643 transitions. [2022-09-20 23:00:38,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2643 transitions. [2022-09-20 23:00:38,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:38,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2643 transitions. [2022-09-20 23:00:38,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 240.27272727272728) internal successors, (2643), 11 states have internal predecessors, (2643), 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 23:00:38,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 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 23:00:38,639 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 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 23:00:38,639 INFO L175 Difference]: Start difference. First operand has 260 places, 250 transitions, 630 flow. Second operand 11 states and 2643 transitions. [2022-09-20 23:00:38,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 377 transitions, 1498 flow [2022-09-20 23:00:38,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 377 transitions, 1461 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-09-20 23:00:38,653 INFO L231 Difference]: Finished difference. Result has 265 places, 255 transitions, 666 flow [2022-09-20 23:00:38,654 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=666, PETRI_PLACES=265, PETRI_TRANSITIONS=255} [2022-09-20 23:00:38,656 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 11 predicate places. [2022-09-20 23:00:38,656 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 255 transitions, 666 flow [2022-09-20 23:00:38,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 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 23:00:38,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:38,657 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] [2022-09-20 23:00:38,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 23:00:38,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash 900044004, now seen corresponding path program 1 times [2022-09-20 23:00:38,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:38,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588660192] [2022-09-20 23:00:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:38,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:00:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:39,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588660192] [2022-09-20 23:00:39,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588660192] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:00:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544699815] [2022-09-20 23:00:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:39,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:00:39,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:00:39,107 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 23:00:39,138 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 23:00:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:39,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-20 23:00:39,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:00:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:00:39,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:00:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:00:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544699815] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:00:40,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:00:40,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 31 [2022-09-20 23:00:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333922791] [2022-09-20 23:00:40,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:00:40,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-20 23:00:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-20 23:00:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-09-20 23:00:40,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 315 [2022-09-20 23:00:40,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 255 transitions, 666 flow. Second operand has 31 states, 31 states have (on average 207.58064516129033) internal successors, (6435), 31 states have internal predecessors, (6435), 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 23:00:40,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:40,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 315 [2022-09-20 23:00:40,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:44,880 INFO L130 PetriNetUnfolder]: 3589/8611 cut-off events. [2022-09-20 23:00:44,881 INFO L131 PetriNetUnfolder]: For 6584/6591 co-relation queries the response was YES. [2022-09-20 23:00:44,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19297 conditions, 8611 events. 3589/8611 cut-off events. For 6584/6591 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 71826 event pairs, 138 based on Foata normal form. 160/7852 useless extension candidates. Maximal degree in co-relation 19281. Up to 904 conditions per place. [2022-09-20 23:00:44,953 INFO L137 encePairwiseOnDemand]: 289/315 looper letters, 365 selfloop transitions, 53 changer transitions 170/747 dead transitions. [2022-09-20 23:00:44,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 747 transitions, 3602 flow [2022-09-20 23:00:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-20 23:00:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-20 23:00:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8296 transitions. [2022-09-20 23:00:44,970 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6930659983291563 [2022-09-20 23:00:44,971 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8296 transitions. [2022-09-20 23:00:44,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8296 transitions. [2022-09-20 23:00:44,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:44,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8296 transitions. [2022-09-20 23:00:44,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 218.31578947368422) internal successors, (8296), 38 states have internal predecessors, (8296), 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 23:00:45,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 315.0) internal successors, (12285), 39 states have internal predecessors, (12285), 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 23:00:45,008 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 315.0) internal successors, (12285), 39 states have internal predecessors, (12285), 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 23:00:45,008 INFO L175 Difference]: Start difference. First operand has 265 places, 255 transitions, 666 flow. Second operand 38 states and 8296 transitions. [2022-09-20 23:00:45,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 747 transitions, 3602 flow [2022-09-20 23:00:45,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 747 transitions, 3442 flow, removed 76 selfloop flow, removed 6 redundant places. [2022-09-20 23:00:45,045 INFO L231 Difference]: Finished difference. Result has 313 places, 286 transitions, 1038 flow [2022-09-20 23:00:45,045 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1038, PETRI_PLACES=313, PETRI_TRANSITIONS=286} [2022-09-20 23:00:45,046 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 59 predicate places. [2022-09-20 23:00:45,046 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 286 transitions, 1038 flow [2022-09-20 23:00:45,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 207.58064516129033) internal successors, (6435), 31 states have internal predecessors, (6435), 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 23:00:45,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:45,055 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-20 23:00:45,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 23:00:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-20 23:00:45,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:45,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 503123161, now seen corresponding path program 1 times [2022-09-20 23:00:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:45,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219805421] [2022-09-20 23:00:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:00:45,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219805421] [2022-09-20 23:00:45,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219805421] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:00:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984338249] [2022-09-20 23:00:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:45,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:00:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:00:45,708 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 23:00:45,709 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 23:00:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:45,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-20 23:00:45,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:00:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:00:46,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:00:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:00:47,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984338249] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:00:47,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:00:47,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 11] total 40 [2022-09-20 23:00:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182023322] [2022-09-20 23:00:47,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:00:47,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-09-20 23:00:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:47,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-09-20 23:00:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2022-09-20 23:00:47,415 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 315 [2022-09-20 23:00:47,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 286 transitions, 1038 flow. Second operand has 40 states, 40 states have (on average 207.575) internal successors, (8303), 40 states have internal predecessors, (8303), 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 23:00:47,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:47,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 315 [2022-09-20 23:00:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:54,112 INFO L130 PetriNetUnfolder]: 4646/11205 cut-off events. [2022-09-20 23:00:54,113 INFO L131 PetriNetUnfolder]: For 20296/20302 co-relation queries the response was YES. [2022-09-20 23:00:54,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29727 conditions, 11205 events. 4646/11205 cut-off events. For 20296/20302 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 101087 event pairs, 254 based on Foata normal form. 112/10042 useless extension candidates. Maximal degree in co-relation 29691. Up to 1829 conditions per place. [2022-09-20 23:00:54,228 INFO L137 encePairwiseOnDemand]: 281/315 looper letters, 381 selfloop transitions, 101 changer transitions 247/888 dead transitions. [2022-09-20 23:00:54,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 888 transitions, 5324 flow [2022-09-20 23:00:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-09-20 23:00:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-09-20 23:00:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 15121 transitions. [2022-09-20 23:00:54,249 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6761010507489381 [2022-09-20 23:00:54,250 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 15121 transitions. [2022-09-20 23:00:54,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 15121 transitions. [2022-09-20 23:00:54,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:54,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 15121 transitions. [2022-09-20 23:00:54,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 212.9718309859155) internal successors, (15121), 71 states have internal predecessors, (15121), 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 23:00:54,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 315.0) internal successors, (22680), 72 states have internal predecessors, (22680), 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 23:00:54,322 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 315.0) internal successors, (22680), 72 states have internal predecessors, (22680), 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 23:00:54,323 INFO L175 Difference]: Start difference. First operand has 313 places, 286 transitions, 1038 flow. Second operand 71 states and 15121 transitions. [2022-09-20 23:00:54,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 888 transitions, 5324 flow [2022-09-20 23:00:54,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 888 transitions, 4793 flow, removed 218 selfloop flow, removed 19 redundant places. [2022-09-20 23:00:54,411 INFO L231 Difference]: Finished difference. Result has 386 places, 337 transitions, 1613 flow [2022-09-20 23:00:54,412 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=1613, PETRI_PLACES=386, PETRI_TRANSITIONS=337} [2022-09-20 23:00:54,413 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 132 predicate places. [2022-09-20 23:00:54,413 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 337 transitions, 1613 flow [2022-09-20 23:00:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 207.575) internal successors, (8303), 40 states have internal predecessors, (8303), 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 23:00:54,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:54,416 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-20 23:00:54,442 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 23:00:54,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-09-20 23:00:54,630 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:00:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1805412068, now seen corresponding path program 1 times [2022-09-20 23:00:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:54,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925660870] [2022-09-20 23:00:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:00:55,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925660870] [2022-09-20 23:00:55,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925660870] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:00:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789988631] [2022-09-20 23:00:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:55,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:00:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:00:55,080 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 23:00:55,101 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 23:00:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:55,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-20 23:00:55,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:00:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:00:55,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:00:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:00:56,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789988631] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:00:56,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:00:56,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2022-09-20 23:00:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639446032] [2022-09-20 23:00:56,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:00:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-20 23:00:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:56,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-20 23:00:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-09-20 23:00:56,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 315 [2022-09-20 23:00:56,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 337 transitions, 1613 flow. Second operand has 31 states, 31 states have (on average 207.96774193548387) internal successors, (6447), 31 states have internal predecessors, (6447), 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 23:00:56,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:56,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 315 [2022-09-20 23:00:56,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:59,892 INFO L130 PetriNetUnfolder]: 4293/9708 cut-off events. [2022-09-20 23:00:59,892 INFO L131 PetriNetUnfolder]: For 55966/55975 co-relation queries the response was YES. [2022-09-20 23:00:59,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32944 conditions, 9708 events. 4293/9708 cut-off events. For 55966/55975 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 81156 event pairs, 188 based on Foata normal form. 74/8621 useless extension candidates. Maximal degree in co-relation 32880. Up to 1516 conditions per place. [2022-09-20 23:01:00,111 INFO L137 encePairwiseOnDemand]: 293/315 looper letters, 260 selfloop transitions, 44 changer transitions 112/575 dead transitions. [2022-09-20 23:01:00,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 575 transitions, 3897 flow [2022-09-20 23:01:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-20 23:01:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-20 23:01:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5657 transitions. [2022-09-20 23:01:00,119 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6907203907203907 [2022-09-20 23:01:00,119 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5657 transitions. [2022-09-20 23:01:00,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5657 transitions. [2022-09-20 23:01:00,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:01:00,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5657 transitions. [2022-09-20 23:01:00,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 217.57692307692307) internal successors, (5657), 26 states have internal predecessors, (5657), 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 23:01:00,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 315.0) internal successors, (8505), 27 states have internal predecessors, (8505), 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 23:01:00,140 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 315.0) internal successors, (8505), 27 states have internal predecessors, (8505), 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 23:01:00,140 INFO L175 Difference]: Start difference. First operand has 386 places, 337 transitions, 1613 flow. Second operand 26 states and 5657 transitions. [2022-09-20 23:01:00,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 575 transitions, 3897 flow [2022-09-20 23:01:00,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 575 transitions, 3245 flow, removed 292 selfloop flow, removed 48 redundant places. [2022-09-20 23:01:00,335 INFO L231 Difference]: Finished difference. Result has 325 places, 283 transitions, 1106 flow [2022-09-20 23:01:00,335 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1106, PETRI_PLACES=325, PETRI_TRANSITIONS=283} [2022-09-20 23:01:00,337 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 71 predicate places. [2022-09-20 23:01:00,337 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 283 transitions, 1106 flow [2022-09-20 23:01:00,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 207.96774193548387) internal successors, (6447), 31 states have internal predecessors, (6447), 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 23:01:00,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:01:00,339 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-20 23:01:00,366 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 23:01:00,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:01:00,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:01:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:01:00,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1230186271, now seen corresponding path program 1 times [2022-09-20 23:01:00,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:01:00,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041498056] [2022-09-20 23:01:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:01:00,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:01:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:01:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:01:01,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:01:01,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041498056] [2022-09-20 23:01:01,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041498056] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:01:01,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50738202] [2022-09-20 23:01:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:01:01,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:01:01,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:01:01,966 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 23:01:01,972 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 23:01:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:01:02,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 97 conjunts are in the unsatisfiable core [2022-09-20 23:01:02,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:01:04,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-09-20 23:01:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:01:04,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:01:05,718 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:01:05,718 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 27 treesize of output 28 [2022-09-20 23:01:05,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:01:05,732 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:01:05,733 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 26 treesize of output 14 [2022-09-20 23:01:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:01:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50738202] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:01:06,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:01:06,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 16] total 67 [2022-09-20 23:01:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895217329] [2022-09-20 23:01:06,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:01:06,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-09-20 23:01:06,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:01:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-09-20 23:01:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=4078, Unknown=0, NotChecked=0, Total=4422 [2022-09-20 23:01:06,231 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 315 [2022-09-20 23:01:06,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 283 transitions, 1106 flow. Second operand has 67 states, 67 states have (on average 177.80597014925374) internal successors, (11913), 67 states have internal predecessors, (11913), 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 23:01:06,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:01:06,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 315 [2022-09-20 23:01:06,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:01:58,906 INFO L130 PetriNetUnfolder]: 92500/167692 cut-off events. [2022-09-20 23:01:58,906 INFO L131 PetriNetUnfolder]: For 535199/535301 co-relation queries the response was YES. [2022-09-20 23:02:00,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524143 conditions, 167692 events. 92500/167692 cut-off events. For 535199/535301 co-relation queries the response was YES. Maximal size of possible extension queue 4420. Compared 1758096 event pairs, 4630 based on Foata normal form. 1231/154940 useless extension candidates. Maximal degree in co-relation 524101. Up to 23590 conditions per place. [2022-09-20 23:02:02,497 INFO L137 encePairwiseOnDemand]: 275/315 looper letters, 1312 selfloop transitions, 409 changer transitions 105/1957 dead transitions. [2022-09-20 23:02:02,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 1957 transitions, 12640 flow [2022-09-20 23:02:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-09-20 23:02:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2022-09-20 23:02:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 19302 transitions. [2022-09-20 23:02:02,520 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6066949552098067 [2022-09-20 23:02:02,520 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 19302 transitions. [2022-09-20 23:02:02,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 19302 transitions. [2022-09-20 23:02:02,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:02:02,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 19302 transitions. [2022-09-20 23:02:02,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 191.1089108910891) internal successors, (19302), 101 states have internal predecessors, (19302), 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 23:02:02,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 315.0) internal successors, (32130), 102 states have internal predecessors, (32130), 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 23:02:02,588 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 315.0) internal successors, (32130), 102 states have internal predecessors, (32130), 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 23:02:02,588 INFO L175 Difference]: Start difference. First operand has 325 places, 283 transitions, 1106 flow. Second operand 101 states and 19302 transitions. [2022-09-20 23:02:02,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 1957 transitions, 12640 flow [2022-09-20 23:02:07,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1957 transitions, 12139 flow, removed 97 selfloop flow, removed 28 redundant places. [2022-09-20 23:02:07,385 INFO L231 Difference]: Finished difference. Result has 449 places, 716 transitions, 5115 flow [2022-09-20 23:02:07,386 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=5115, PETRI_PLACES=449, PETRI_TRANSITIONS=716} [2022-09-20 23:02:07,387 INFO L287 CegarLoopForPetriNet]: 254 programPoint places, 195 predicate places. [2022-09-20 23:02:07,387 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 716 transitions, 5115 flow [2022-09-20 23:02:07,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 177.80597014925374) internal successors, (11913), 67 states have internal predecessors, (11913), 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 23:02:07,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:02:07,389 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-20 23:02:07,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 23:02:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:02:07,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-09-20 23:02:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:02:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2089635989, now seen corresponding path program 1 times [2022-09-20 23:02:07,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:02:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589362276] [2022-09-20 23:02:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:02:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:08,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:02:08,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589362276] [2022-09-20 23:02:08,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589362276] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:02:08,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353084140] [2022-09-20 23:02:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:02:08,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:02:08,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:02:08,857 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 23:02:08,858 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 23:02:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:02:09,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 94 conjunts are in the unsatisfiable core [2022-09-20 23:02:09,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:02:10,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-09-20 23:02:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:02:11,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:02:11,813 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:02:11,814 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 27 treesize of output 28 [2022-09-20 23:02:11,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 23:02:11,828 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:02:11,828 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 27 treesize of output 14 [2022-09-20 23:02:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 23:02:12,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353084140] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:02:12,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:02:12,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 16] total 66 [2022-09-20 23:02:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148618528] [2022-09-20 23:02:12,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:02:12,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-09-20 23:02:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:02:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-09-20 23:02:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=4005, Unknown=0, NotChecked=0, Total=4290 [2022-09-20 23:02:12,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 315 [2022-09-20 23:02:12,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 716 transitions, 5115 flow. Second operand has 66 states, 66 states have (on average 174.0) internal successors, (11484), 66 states have internal predecessors, (11484), 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 23:02:12,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:02:12,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 315 [2022-09-20 23:02:12,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand