/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:43:53,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:43:53,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:43:53,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:43:53,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:43:53,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:43:53,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:43:53,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:43:53,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:43:53,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:43:53,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:43:53,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:43:53,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:43:53,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:43:53,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:43:53,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:43:53,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:43:53,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:43:53,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:43:53,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:43:53,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:43:53,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:43:53,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:43:53,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:43:53,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:43:53,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:43:53,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:43:53,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:43:53,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:43:53,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:43:53,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:43:53,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:43:53,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:43:53,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:43:53,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:43:53,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:43:53,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:43:53,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:43:53,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:43:53,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:43:53,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:43:53,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 17:43:53,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:43:53,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:43:53,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:43:53,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:43:53,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:43:53,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:43:53,337 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:43:53,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:43:53,337 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:43:53,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:43:53,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:43:53,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:43:53,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:43:53,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:43:53,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:43:53,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:43:53,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:43:53,340 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:43:53,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:43:53,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:43:53,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:43:53,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:43:53,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:43:53,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:43:53,653 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:43:53,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-12-06 17:43:54,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:43:54,868 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:43:54,869 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-12-06 17:43:54,896 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee6c60e/1a727ff2fc5d4b66b7c2b206921f754c/FLAGf07f3e9f9 [2022-12-06 17:43:54,908 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee6c60e/1a727ff2fc5d4b66b7c2b206921f754c [2022-12-06 17:43:54,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:43:54,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:43:54,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:43:54,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:43:54,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:43:54,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:43:54" (1/1) ... [2022-12-06 17:43:54,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9448ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:54, skipping insertion in model container [2022-12-06 17:43:54,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:43:54" (1/1) ... [2022-12-06 17:43:54,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:43:54,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:43:55,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,076 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-12-06 17:43:55,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:43:55,095 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:43:55,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:43:55,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:43:55,132 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c[3947,3960] [2022-12-06 17:43:55,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:43:55,151 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:43:55,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55 WrapperNode [2022-12-06 17:43:55,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:43:55,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:43:55,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:43:55,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:43:55,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,185 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 315 [2022-12-06 17:43:55,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:43:55,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:43:55,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:43:55,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:43:55,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:43:55,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:43:55,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:43:55,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:43:55,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (1/1) ... [2022-12-06 17:43:55,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:43:55,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:43:55,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 17:43:55,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 17:43:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:43:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:43:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:43:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:43:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:43:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:43:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 17:43:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:43:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:43:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:43:55,292 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:43:55,429 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:43:55,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:43:55,765 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:43:55,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:43:55,943 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-06 17:43:55,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:55 BoogieIcfgContainer [2022-12-06 17:43:55,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:43:55,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:43:55,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:43:55,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:43:55,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:43:54" (1/3) ... [2022-12-06 17:43:55,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f25b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:43:55, skipping insertion in model container [2022-12-06 17:43:55,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:43:55" (2/3) ... [2022-12-06 17:43:55,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f25b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:43:55, skipping insertion in model container [2022-12-06 17:43:55,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:43:55" (3/3) ... [2022-12-06 17:43:55,953 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-12-06 17:43:55,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:43:55,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:43:55,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:43:56,047 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 17:43:56,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 245 transitions, 514 flow [2022-12-06 17:43:56,195 INFO L130 PetriNetUnfolder]: 22/242 cut-off events. [2022-12-06 17:43:56,195 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 17:43:56,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 242 events. 22/242 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 204. Up to 3 conditions per place. [2022-12-06 17:43:56,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 245 transitions, 514 flow [2022-12-06 17:43:56,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 232 transitions, 482 flow [2022-12-06 17:43:56,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:43:56,230 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;@5a206a7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:43:56,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 17:43:56,295 INFO L130 PetriNetUnfolder]: 22/231 cut-off events. [2022-12-06 17:43:56,295 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 17:43:56,296 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:56,297 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:56,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash -44026324, now seen corresponding path program 1 times [2022-12-06 17:43:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155464254] [2022-12-06 17:43:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:43:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:56,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155464254] [2022-12-06 17:43:56,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155464254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:56,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:56,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 17:43:56,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148746427] [2022-12-06 17:43:56,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:56,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-06 17:43:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-06 17:43:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-06 17:43:56,691 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 245 [2022-12-06 17:43:56,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 232 transitions, 482 flow. Second operand has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:56,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:56,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 245 [2022-12-06 17:43:56,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:56,870 INFO L130 PetriNetUnfolder]: 137/603 cut-off events. [2022-12-06 17:43:56,871 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-06 17:43:56,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 603 events. 137/603 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2430 event pairs, 74 based on Foata normal form. 97/633 useless extension candidates. Maximal degree in co-relation 622. Up to 197 conditions per place. [2022-12-06 17:43:56,880 INFO L137 encePairwiseOnDemand]: 229/245 looper letters, 13 selfloop transitions, 0 changer transitions 8/216 dead transitions. [2022-12-06 17:43:56,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 216 transitions, 476 flow [2022-12-06 17:43:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-06 17:43:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-06 17:43:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 459 transitions. [2022-12-06 17:43:56,895 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.936734693877551 [2022-12-06 17:43:56,899 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 1 predicate places. [2022-12-06 17:43:56,900 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 216 transitions, 476 flow [2022-12-06 17:43:56,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:56,900 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:56,901 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:56,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:43:56,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:56,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1988719750, now seen corresponding path program 1 times [2022-12-06 17:43:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:56,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659210105] [2022-12-06 17:43:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:56,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:43:57,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:57,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659210105] [2022-12-06 17:43:57,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659210105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:57,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:57,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:43:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779562616] [2022-12-06 17:43:57,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:43:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:43:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:43:57,360 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 245 [2022-12-06 17:43:57,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 216 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:57,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:57,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 245 [2022-12-06 17:43:57,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:57,498 INFO L130 PetriNetUnfolder]: 125/522 cut-off events. [2022-12-06 17:43:57,498 INFO L131 PetriNetUnfolder]: For 118/152 co-relation queries the response was YES. [2022-12-06 17:43:57,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 522 events. 125/522 cut-off events. For 118/152 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1796 event pairs, 29 based on Foata normal form. 10/490 useless extension candidates. Maximal degree in co-relation 709. Up to 186 conditions per place. [2022-12-06 17:43:57,502 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 22 selfloop transitions, 2 changer transitions 8/223 dead transitions. [2022-12-06 17:43:57,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 223 transitions, 558 flow [2022-12-06 17:43:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:43:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:43:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-12-06 17:43:57,504 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2022-12-06 17:43:57,505 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 3 predicate places. [2022-12-06 17:43:57,505 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 223 transitions, 558 flow [2022-12-06 17:43:57,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:57,506 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:57,506 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:43:57,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -680111078, now seen corresponding path program 2 times [2022-12-06 17:43:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:57,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109654455] [2022-12-06 17:43:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:43:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:57,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109654455] [2022-12-06 17:43:57,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109654455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:57,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:57,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:43:57,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903039853] [2022-12-06 17:43:57,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:43:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:43:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:43:57,943 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 245 [2022-12-06 17:43:57,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 223 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:57,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:57,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 245 [2022-12-06 17:43:57,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:58,103 INFO L130 PetriNetUnfolder]: 149/684 cut-off events. [2022-12-06 17:43:58,103 INFO L131 PetriNetUnfolder]: For 325/437 co-relation queries the response was YES. [2022-12-06 17:43:58,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 684 events. 149/684 cut-off events. For 325/437 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2620 event pairs, 55 based on Foata normal form. 9/643 useless extension candidates. Maximal degree in co-relation 849. Up to 222 conditions per place. [2022-12-06 17:43:58,107 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 54 selfloop transitions, 8 changer transitions 29/248 dead transitions. [2022-12-06 17:43:58,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 248 transitions, 818 flow [2022-12-06 17:43:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:43:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:43:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1670 transitions. [2022-12-06 17:43:58,110 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7573696145124716 [2022-12-06 17:43:58,110 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 11 predicate places. [2022-12-06 17:43:58,110 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 248 transitions, 818 flow [2022-12-06 17:43:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.16666666666666) internal successors, (1099), 6 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:58,111 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:58,111 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:43:58,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1038269071, now seen corresponding path program 1 times [2022-12-06 17:43:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:58,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83523824] [2022-12-06 17:43:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:43:58,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:58,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83523824] [2022-12-06 17:43:58,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83523824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:58,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:58,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:43:58,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530256299] [2022-12-06 17:43:58,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:58,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:43:58,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:43:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:43:58,270 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 245 [2022-12-06 17:43:58,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 248 transitions, 818 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:58,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:58,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 245 [2022-12-06 17:43:58,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:58,389 INFO L130 PetriNetUnfolder]: 118/659 cut-off events. [2022-12-06 17:43:58,389 INFO L131 PetriNetUnfolder]: For 558/690 co-relation queries the response was YES. [2022-12-06 17:43:58,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 659 events. 118/659 cut-off events. For 558/690 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2411 event pairs, 26 based on Foata normal form. 4/618 useless extension candidates. Maximal degree in co-relation 760. Up to 189 conditions per place. [2022-12-06 17:43:58,392 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 25 selfloop transitions, 3 changer transitions 33/256 dead transitions. [2022-12-06 17:43:58,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 256 transitions, 974 flow [2022-12-06 17:43:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:43:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:43:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2022-12-06 17:43:58,394 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.891156462585034 [2022-12-06 17:43:58,394 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 13 predicate places. [2022-12-06 17:43:58,395 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 256 transitions, 974 flow [2022-12-06 17:43:58,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:58,395 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:58,395 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:43:58,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 265760261, now seen corresponding path program 2 times [2022-12-06 17:43:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386837911] [2022-12-06 17:43:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:43:58,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386837911] [2022-12-06 17:43:58,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386837911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:58,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:58,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:43:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140401465] [2022-12-06 17:43:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:58,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:43:58,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:43:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:43:58,552 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 245 [2022-12-06 17:43:58,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 256 transitions, 974 flow. Second operand has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:58,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:58,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 245 [2022-12-06 17:43:58,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:58,771 INFO L130 PetriNetUnfolder]: 234/1082 cut-off events. [2022-12-06 17:43:58,772 INFO L131 PetriNetUnfolder]: For 2001/2257 co-relation queries the response was YES. [2022-12-06 17:43:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3190 conditions, 1082 events. 234/1082 cut-off events. For 2001/2257 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5747 event pairs, 40 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 1764. Up to 355 conditions per place. [2022-12-06 17:43:58,777 INFO L137 encePairwiseOnDemand]: 232/245 looper letters, 68 selfloop transitions, 2 changer transitions 47/281 dead transitions. [2022-12-06 17:43:58,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 281 transitions, 1426 flow [2022-12-06 17:43:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:43:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:43:58,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1278 transitions. [2022-12-06 17:43:58,780 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7451895043731779 [2022-12-06 17:43:58,782 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 19 predicate places. [2022-12-06 17:43:58,782 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 281 transitions, 1426 flow [2022-12-06 17:43:58,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:58,782 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:58,783 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:58,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:43:58,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash -771699146, now seen corresponding path program 1 times [2022-12-06 17:43:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:58,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475377171] [2022-12-06 17:43:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:43:58,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:58,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475377171] [2022-12-06 17:43:58,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475377171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:58,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:58,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 17:43:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529670811] [2022-12-06 17:43:58,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:58,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 17:43:58,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:58,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 17:43:58,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 17:43:58,990 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 245 [2022-12-06 17:43:58,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 281 transitions, 1426 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:58,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:58,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 245 [2022-12-06 17:43:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:59,105 INFO L130 PetriNetUnfolder]: 121/657 cut-off events. [2022-12-06 17:43:59,105 INFO L131 PetriNetUnfolder]: For 1548/1828 co-relation queries the response was YES. [2022-12-06 17:43:59,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 657 events. 121/657 cut-off events. For 1548/1828 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2383 event pairs, 16 based on Foata normal form. 16/623 useless extension candidates. Maximal degree in co-relation 1023. Up to 200 conditions per place. [2022-12-06 17:43:59,108 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 31 selfloop transitions, 4 changer transitions 41/269 dead transitions. [2022-12-06 17:43:59,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 269 transitions, 1371 flow [2022-12-06 17:43:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 17:43:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 17:43:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-12-06 17:43:59,110 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8884353741496599 [2022-12-06 17:43:59,113 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 21 predicate places. [2022-12-06 17:43:59,113 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 269 transitions, 1371 flow [2022-12-06 17:43:59,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:59,113 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:59,114 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:59,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 17:43:59,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 517620826, now seen corresponding path program 2 times [2022-12-06 17:43:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:59,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484673338] [2022-12-06 17:43:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:43:59,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:59,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484673338] [2022-12-06 17:43:59,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484673338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:59,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:59,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:43:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310211154] [2022-12-06 17:43:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:59,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:43:59,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:43:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:43:59,411 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 245 [2022-12-06 17:43:59,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 269 transitions, 1371 flow. Second operand has 6 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:59,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:59,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 245 [2022-12-06 17:43:59,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:43:59,599 INFO L130 PetriNetUnfolder]: 159/927 cut-off events. [2022-12-06 17:43:59,600 INFO L131 PetriNetUnfolder]: For 3416/4078 co-relation queries the response was YES. [2022-12-06 17:43:59,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 927 events. 159/927 cut-off events. For 3416/4078 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4385 event pairs, 26 based on Foata normal form. 7/859 useless extension candidates. Maximal degree in co-relation 1148. Up to 286 conditions per place. [2022-12-06 17:43:59,604 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 68 selfloop transitions, 6 changer transitions 72/304 dead transitions. [2022-12-06 17:43:59,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 304 transitions, 2074 flow [2022-12-06 17:43:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:43:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:43:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1306 transitions. [2022-12-06 17:43:59,606 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7615160349854228 [2022-12-06 17:43:59,607 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 27 predicate places. [2022-12-06 17:43:59,607 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 304 transitions, 2074 flow [2022-12-06 17:43:59,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.16666666666666) internal successors, (1105), 6 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:59,608 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:43:59,608 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:43:59,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:43:59,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:43:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:43:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash 879760184, now seen corresponding path program 1 times [2022-12-06 17:43:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:43:59,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664511536] [2022-12-06 17:43:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:43:59,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:43:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:43:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:43:59,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:43:59,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664511536] [2022-12-06 17:43:59,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664511536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:43:59,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:43:59,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 17:43:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482479111] [2022-12-06 17:43:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:43:59,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:43:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:43:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:43:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:43:59,845 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 245 [2022-12-06 17:43:59,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 304 transitions, 2074 flow. Second operand has 6 states, 6 states have (on average 184.83333333333334) internal successors, (1109), 6 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:43:59,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:43:59,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 245 [2022-12-06 17:43:59,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:44:00,111 INFO L130 PetriNetUnfolder]: 170/1294 cut-off events. [2022-12-06 17:44:00,112 INFO L131 PetriNetUnfolder]: For 5690/6252 co-relation queries the response was YES. [2022-12-06 17:44:00,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 1294 events. 170/1294 cut-off events. For 5690/6252 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7010 event pairs, 36 based on Foata normal form. 24/1206 useless extension candidates. Maximal degree in co-relation 1954. Up to 357 conditions per place. [2022-12-06 17:44:00,117 INFO L137 encePairwiseOnDemand]: 234/245 looper letters, 70 selfloop transitions, 8 changer transitions 136/372 dead transitions. [2022-12-06 17:44:00,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 372 transitions, 3058 flow [2022-12-06 17:44:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:44:00,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:44:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1678 transitions. [2022-12-06 17:44:00,120 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7609977324263039 [2022-12-06 17:44:00,122 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 35 predicate places. [2022-12-06 17:44:00,122 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 372 transitions, 3058 flow [2022-12-06 17:44:00,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.83333333333334) internal successors, (1109), 6 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:00,122 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:44:00,123 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:44:00,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 17:44:00,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:44:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:44:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1918272211, now seen corresponding path program 1 times [2022-12-06 17:44:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:44:00,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420158260] [2022-12-06 17:44:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:44:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:44:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:44:00,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420158260] [2022-12-06 17:44:00,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420158260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:44:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366715328] [2022-12-06 17:44:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:00,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:44:00,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:44:00,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:44:00,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:44:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:00,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 17:44:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:44:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:44:01,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:44:01,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-12-06 17:44:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:44:01,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366715328] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:44:01,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:44:01,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-06 17:44:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260323888] [2022-12-06 17:44:01,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:44:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-06 17:44:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:44:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-06 17:44:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-12-06 17:44:01,564 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 245 [2022-12-06 17:44:01,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 372 transitions, 3058 flow. Second operand has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:01,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:44:01,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 245 [2022-12-06 17:44:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:44:02,310 INFO L130 PetriNetUnfolder]: 290/2061 cut-off events. [2022-12-06 17:44:02,311 INFO L131 PetriNetUnfolder]: For 11645/13329 co-relation queries the response was YES. [2022-12-06 17:44:02,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 2061 events. 290/2061 cut-off events. For 11645/13329 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13841 event pairs, 54 based on Foata normal form. 38/1919 useless extension candidates. Maximal degree in co-relation 3430. Up to 633 conditions per place. [2022-12-06 17:44:02,318 INFO L137 encePairwiseOnDemand]: 224/245 looper letters, 66 selfloop transitions, 24 changer transitions 267/508 dead transitions. [2022-12-06 17:44:02,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 508 transitions, 5639 flow [2022-12-06 17:44:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-06 17:44:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-06 17:44:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4059 transitions. [2022-12-06 17:44:02,324 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7203194321206744 [2022-12-06 17:44:02,325 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 57 predicate places. [2022-12-06 17:44:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 508 transitions, 5639 flow [2022-12-06 17:44:02,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:02,327 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:44:02,327 INFO L213 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] [2022-12-06 17:44:02,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-06 17:44:02,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:44:02,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:44:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:44:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 20414402, now seen corresponding path program 2 times [2022-12-06 17:44:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:44:02,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288036426] [2022-12-06 17:44:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:02,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:44:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-06 17:44:03,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:44:03,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288036426] [2022-12-06 17:44:03,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288036426] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:44:03,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121252323] [2022-12-06 17:44:03,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:44:03,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:44:03,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:44:03,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:44:03,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:44:03,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:44:03,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:44:03,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-06 17:44:03,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:44:04,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:44:04,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 17:44:04,480 INFO L321 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2022-12-06 17:44:04,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 13 [2022-12-06 17:44:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:44:04,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:44:04,868 INFO L321 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2022-12-06 17:44:04,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 62 [2022-12-06 17:44:04,874 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-06 17:44:04,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2022-12-06 17:44:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:44:06,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121252323] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:44:06,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:44:06,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 50 [2022-12-06 17:44:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619047653] [2022-12-06 17:44:06,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:44:06,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-06 17:44:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:44:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-06 17:44:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2257, Unknown=0, NotChecked=0, Total=2450 [2022-12-06 17:44:06,023 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 245 [2022-12-06 17:44:06,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 508 transitions, 5639 flow. Second operand has 50 states, 50 states have (on average 133.26) internal successors, (6663), 50 states have internal predecessors, (6663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:06,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:44:06,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 245 [2022-12-06 17:44:06,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:44:13,422 INFO L130 PetriNetUnfolder]: 4360/11782 cut-off events. [2022-12-06 17:44:13,422 INFO L131 PetriNetUnfolder]: For 109722/112908 co-relation queries the response was YES. [2022-12-06 17:44:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59538 conditions, 11782 events. 4360/11782 cut-off events. For 109722/112908 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 104681 event pairs, 772 based on Foata normal form. 12/10807 useless extension candidates. Maximal degree in co-relation 18005. Up to 4306 conditions per place. [2022-12-06 17:44:13,508 INFO L137 encePairwiseOnDemand]: 200/245 looper letters, 340 selfloop transitions, 107 changer transitions 468/1028 dead transitions. [2022-12-06 17:44:13,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1028 transitions, 15434 flow [2022-12-06 17:44:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-06 17:44:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-12-06 17:44:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 10936 transitions. [2022-12-06 17:44:13,521 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5443504230960677 [2022-12-06 17:44:13,521 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 138 predicate places. [2022-12-06 17:44:13,521 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 1028 transitions, 15434 flow [2022-12-06 17:44:13,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 133.26) internal successors, (6663), 50 states have internal predecessors, (6663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:13,523 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:44:13,524 INFO L213 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] [2022-12-06 17:44:13,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-06 17:44:13,729 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,SelfDestructingSolverStorable9 [2022-12-06 17:44:13,730 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:44:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:44:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1938318196, now seen corresponding path program 3 times [2022-12-06 17:44:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:44:13,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655378045] [2022-12-06 17:44:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:13,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:44:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-06 17:44:14,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:44:14,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655378045] [2022-12-06 17:44:14,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655378045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:44:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:44:14,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-06 17:44:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167235187] [2022-12-06 17:44:14,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:44:14,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-06 17:44:14,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:44:14,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-06 17:44:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-06 17:44:14,436 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 245 [2022-12-06 17:44:14,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1028 transitions, 15434 flow. Second operand has 13 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:14,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:44:14,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 245 [2022-12-06 17:44:14,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:44:17,094 INFO L130 PetriNetUnfolder]: 4720/12500 cut-off events. [2022-12-06 17:44:17,095 INFO L131 PetriNetUnfolder]: For 135354/139504 co-relation queries the response was YES. [2022-12-06 17:44:17,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71864 conditions, 12500 events. 4720/12500 cut-off events. For 135354/139504 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 111590 event pairs, 720 based on Foata normal form. 66/11608 useless extension candidates. Maximal degree in co-relation 23325. Up to 5051 conditions per place. [2022-12-06 17:44:17,171 INFO L137 encePairwiseOnDemand]: 219/245 looper letters, 388 selfloop transitions, 60 changer transitions 563/1203 dead transitions. [2022-12-06 17:44:17,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1203 transitions, 20703 flow [2022-12-06 17:44:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-06 17:44:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-06 17:44:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3025 transitions. [2022-12-06 17:44:17,174 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6859410430839002 [2022-12-06 17:44:17,175 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 155 predicate places. [2022-12-06 17:44:17,175 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1203 transitions, 20703 flow [2022-12-06 17:44:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:17,176 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:44:17,176 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:44:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 17:44:17,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:44:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:44:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1966953634, now seen corresponding path program 1 times [2022-12-06 17:44:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:44:17,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138271916] [2022-12-06 17:44:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:44:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 17:44:17,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:44:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138271916] [2022-12-06 17:44:17,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138271916] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:44:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184054327] [2022-12-06 17:44:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:17,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:44:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:44:17,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:44:17,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 17:44:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:17,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 17:44:17,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:44:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 17:44:18,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:44:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 17:44:18,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184054327] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:44:18,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:44:18,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-06 17:44:18,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638076093] [2022-12-06 17:44:18,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:44:18,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-06 17:44:18,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:44:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-06 17:44:18,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-12-06 17:44:18,680 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 245 [2022-12-06 17:44:18,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1203 transitions, 20703 flow. Second operand has 25 states, 25 states have (on average 174.32) internal successors, (4358), 25 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:18,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:44:18,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 245 [2022-12-06 17:44:18,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:44:23,128 INFO L130 PetriNetUnfolder]: 7175/19114 cut-off events. [2022-12-06 17:44:23,128 INFO L131 PetriNetUnfolder]: For 252816/260232 co-relation queries the response was YES. [2022-12-06 17:44:23,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117367 conditions, 19114 events. 7175/19114 cut-off events. For 252816/260232 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 186949 event pairs, 1330 based on Foata normal form. 276/17952 useless extension candidates. Maximal degree in co-relation 24904. Up to 7168 conditions per place. [2022-12-06 17:44:23,233 INFO L137 encePairwiseOnDemand]: 225/245 looper letters, 326 selfloop transitions, 46 changer transitions 1135/1785 dead transitions. [2022-12-06 17:44:23,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1785 transitions, 36896 flow [2022-12-06 17:44:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-06 17:44:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-06 17:44:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4039 transitions. [2022-12-06 17:44:23,237 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7167701863354037 [2022-12-06 17:44:23,237 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 177 predicate places. [2022-12-06 17:44:23,237 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 1785 transitions, 36896 flow [2022-12-06 17:44:23,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 174.32) internal successors, (4358), 25 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:23,239 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:44:23,239 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:44:23,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 17:44:23,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:44:23,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:44:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:44:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 790534021, now seen corresponding path program 2 times [2022-12-06 17:44:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:44:23,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323202571] [2022-12-06 17:44:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:44:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:44:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:44:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 17:44:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:44:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323202571] [2022-12-06 17:44:24,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323202571] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:44:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110934244] [2022-12-06 17:44:24,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:44:24,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:44:24,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:44:24,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:44:24,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:44:24,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:44:24,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:44:24,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-06 17:44:24,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:44:25,780 INFO L321 Elim1Store]: treesize reduction 3, result has 92.9 percent of original size [2022-12-06 17:44:25,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 53 [2022-12-06 17:44:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:44:25,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:44:26,327 INFO L321 Elim1Store]: treesize reduction 18, result has 88.4 percent of original size [2022-12-06 17:44:26,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 154 [2022-12-06 17:44:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 17:44:27,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110934244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:44:27,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:44:27,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 10] total 39 [2022-12-06 17:44:27,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169394066] [2022-12-06 17:44:27,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:44:27,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-06 17:44:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:44:27,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-06 17:44:27,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2022-12-06 17:44:27,024 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 245 [2022-12-06 17:44:27,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1785 transitions, 36896 flow. Second operand has 39 states, 39 states have (on average 148.7948717948718) internal successors, (5803), 39 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:44:27,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:44:27,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 245 [2022-12-06 17:44:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:45:14,716 INFO L130 PetriNetUnfolder]: 61527/130595 cut-off events. [2022-12-06 17:45:14,717 INFO L131 PetriNetUnfolder]: For 1952379/2002545 co-relation queries the response was YES. [2022-12-06 17:45:15,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798116 conditions, 130595 events. 61527/130595 cut-off events. For 1952379/2002545 co-relation queries the response was YES. Maximal size of possible extension queue 2644. Compared 1484102 event pairs, 6195 based on Foata normal form. 1401/121165 useless extension candidates. Maximal degree in co-relation 296331. Up to 55792 conditions per place. [2022-12-06 17:45:15,740 INFO L137 encePairwiseOnDemand]: 208/245 looper letters, 3008 selfloop transitions, 900 changer transitions 2482/6528 dead transitions. [2022-12-06 17:45:15,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 6528 transitions, 143774 flow [2022-12-06 17:45:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-12-06 17:45:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2022-12-06 17:45:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 21104 transitions. [2022-12-06 17:45:15,900 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6241940254362615 [2022-12-06 17:45:15,900 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 314 predicate places. [2022-12-06 17:45:15,900 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 6528 transitions, 143774 flow [2022-12-06 17:45:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 148.7948717948718) internal successors, (5803), 39 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:45:15,902 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:45:15,902 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:45:15,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 17:45:16,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:45:16,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:45:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:45:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash 933903671, now seen corresponding path program 3 times [2022-12-06 17:45:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:45:16,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975041092] [2022-12-06 17:45:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:45:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:45:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:45:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 17:45:16,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:45:16,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975041092] [2022-12-06 17:45:16,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975041092] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:45:16,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950290724] [2022-12-06 17:45:16,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:45:16,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:45:16,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:45:16,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:45:16,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:45:16,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 17:45:16,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:45:16,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-06 17:45:16,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:45:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 17:45:16,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 17:45:16,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950290724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:45:16,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 17:45:16,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-06 17:45:16,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543832896] [2022-12-06 17:45:16,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:45:16,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 17:45:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:45:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 17:45:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:45:16,535 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 245 [2022-12-06 17:45:16,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 6528 transitions, 143774 flow. Second operand has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:45:16,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:45:16,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 245 [2022-12-06 17:45:16,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:47:03,407 INFO L130 PetriNetUnfolder]: 69405/145233 cut-off events. [2022-12-06 17:47:03,407 INFO L131 PetriNetUnfolder]: For 2649450/2730997 co-relation queries the response was YES. [2022-12-06 17:47:03,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929390 conditions, 145233 events. 69405/145233 cut-off events. For 2649450/2730997 co-relation queries the response was YES. Maximal size of possible extension queue 2894. Compared 1643586 event pairs, 7594 based on Foata normal form. 3307/136433 useless extension candidates. Maximal degree in co-relation 394532. Up to 58386 conditions per place. [2022-12-06 17:47:04,651 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 2308 selfloop transitions, 295 changer transitions 2177/6660 dead transitions. [2022-12-06 17:47:04,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 6660 transitions, 156798 flow [2022-12-06 17:47:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 17:47:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 17:47:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 883 transitions. [2022-12-06 17:47:04,652 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9010204081632653 [2022-12-06 17:47:04,653 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 314 predicate places. [2022-12-06 17:47:04,653 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 6660 transitions, 156798 flow [2022-12-06 17:47:04,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:47:04,654 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:47:04,654 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:47:04,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:47:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-06 17:47:04,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:47:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:47:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1164242527, now seen corresponding path program 4 times [2022-12-06 17:47:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:47:04,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889960361] [2022-12-06 17:47:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:47:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:47:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:47:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-06 17:47:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:47:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889960361] [2022-12-06 17:47:05,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889960361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:47:05,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:47:05,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-06 17:47:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57327809] [2022-12-06 17:47:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:47:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 17:47:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:47:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 17:47:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-12-06 17:47:05,550 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 245 [2022-12-06 17:47:05,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 6660 transitions, 156798 flow. Second operand has 16 states, 16 states have (on average 155.6875) internal successors, (2491), 16 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:47:05,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:47:05,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 245 [2022-12-06 17:47:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:27,006 INFO L130 PetriNetUnfolder]: 79566/165696 cut-off events. [2022-12-06 17:50:27,006 INFO L131 PetriNetUnfolder]: For 3058286/3179227 co-relation queries the response was YES. [2022-12-06 17:50:27,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160337 conditions, 165696 events. 79566/165696 cut-off events. For 3058286/3179227 co-relation queries the response was YES. Maximal size of possible extension queue 3466. Compared 1907398 event pairs, 7970 based on Foata normal form. 1869/154357 useless extension candidates. Maximal degree in co-relation 497175. Up to 76266 conditions per place. [2022-12-06 17:50:28,550 INFO L137 encePairwiseOnDemand]: 214/245 looper letters, 5047 selfloop transitions, 322 changer transitions 2260/7835 dead transitions. [2022-12-06 17:50:28,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 7835 transitions, 195592 flow [2022-12-06 17:50:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-06 17:50:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-06 17:50:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3140 transitions. [2022-12-06 17:50:28,553 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6408163265306123 [2022-12-06 17:50:28,553 INFO L294 CegarLoopForPetriNet]: 220 programPoint places, 333 predicate places. [2022-12-06 17:50:28,553 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 7835 transitions, 195592 flow [2022-12-06 17:50:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 155.6875) internal successors, (2491), 16 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:50:28,554 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:50:28,554 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:50:28,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 17:50:28,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:50:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:50:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1469947977, now seen corresponding path program 5 times [2022-12-06 17:50:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:50:28,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397005899] [2022-12-06 17:50:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:50:28,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:50:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:50:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 17:50:30,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:50:30,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397005899] [2022-12-06 17:50:30,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397005899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:50:30,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266148769] [2022-12-06 17:50:30,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 17:50:30,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:50:30,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:50:30,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:50:30,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 17:50:30,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 17:50:30,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:50:30,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-06 17:50:30,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:50:31,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 17:50:31,779 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-06 17:50:31,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 48 [2022-12-06 17:50:31,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 17 [2022-12-06 17:50:31,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-06 17:50:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 17:50:32,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:50:32,554 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 17:50:32,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 132 [2022-12-06 17:50:32,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2022-12-06 17:50:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-06 17:50:33,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266148769] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:50:33,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:50:33,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 24] total 69 [2022-12-06 17:50:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739458445] [2022-12-06 17:50:33,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:50:33,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-12-06 17:50:33,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:50:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-12-06 17:50:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=4355, Unknown=1, NotChecked=0, Total=4692 [2022-12-06 17:50:33,830 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 245 [2022-12-06 17:50:33,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 7835 transitions, 195592 flow. Second operand has 69 states, 69 states have (on average 125.28985507246377) internal successors, (8645), 69 states have internal predecessors, (8645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:50:33,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:50:33,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 245 [2022-12-06 17:50:33,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:50:35,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:53:50,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:53:52,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 17:54:35,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2022-12-06 17:56:17,052 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:56:17,053 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 17:56:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 516 states. [2022-12-06 17:56:17,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 17:56:17,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 17:56:18,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 17:56:18,015 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 121/245 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1151664 conditions, 148781 events (70584/148780 cut-off events. For 3015157/3163990 co-relation queries the response was YES. Maximal size of possible extension queue 10752. Compared 1890602 event pairs, 5586 based on Foata normal form. 8948/156639 useless extension candidates. Maximal degree in co-relation 416183. Up to 72259 conditions per place.). [2022-12-06 17:56:18,021 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 17:56:18,021 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 17:56:18,021 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 17:56:18,022 INFO L458 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 1, 1] [2022-12-06 17:56:18,044 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:56:18,044 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:56:18,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:56:18 BasicIcfg [2022-12-06 17:56:18,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:56:18,046 INFO L158 Benchmark]: Toolchain (without parser) took 743135.72ms. Allocated memory was 209.7MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 184.9MB in the beginning and 93.1MB in the end (delta: 91.8MB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2022-12-06 17:56:18,047 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 186.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:56:18,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.82ms. Allocated memory is still 209.7MB. Free memory was 184.9MB in the beginning and 170.8MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 17:56:18,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.36ms. Allocated memory is still 209.7MB. Free memory was 170.8MB in the beginning and 168.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 17:56:18,047 INFO L158 Benchmark]: Boogie Preprocessor took 25.88ms. Allocated memory is still 209.7MB. Free memory was 168.2MB in the beginning and 166.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:56:18,047 INFO L158 Benchmark]: RCFGBuilder took 734.72ms. Allocated memory is still 209.7MB. Free memory was 166.1MB in the beginning and 124.1MB in the end (delta: 42.0MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2022-12-06 17:56:18,047 INFO L158 Benchmark]: TraceAbstraction took 742097.55ms. Allocated memory was 209.7MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 123.6MB in the beginning and 93.1MB in the end (delta: 30.5MB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2022-12-06 17:56:18,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 186.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.82ms. Allocated memory is still 209.7MB. Free memory was 184.9MB in the beginning and 170.8MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.36ms. Allocated memory is still 209.7MB. Free memory was 170.8MB in the beginning and 168.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.88ms. Allocated memory is still 209.7MB. Free memory was 168.2MB in the beginning and 166.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 734.72ms. Allocated memory is still 209.7MB. Free memory was 166.1MB in the beginning and 124.1MB in the end (delta: 42.0MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 742097.55ms. Allocated memory was 209.7MB in the beginning and 4.1GB in the end (delta: 3.9GB). Free memory was 123.6MB in the beginning and 93.1MB in the end (delta: 30.5MB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 121/245 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1151664 conditions, 148781 events (70584/148780 cut-off events. For 3015157/3163990 co-relation queries the response was YES. Maximal size of possible extension queue 10752. Compared 1890602 event pairs, 5586 based on Foata normal form. 8948/156639 useless extension candidates. Maximal degree in co-relation 416183. Up to 72259 conditions per place.). - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 121/245 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1151664 conditions, 148781 events (70584/148780 cut-off events. For 3015157/3163990 co-relation queries the response was YES. Maximal size of possible extension queue 10752. Compared 1890602 event pairs, 5586 based on Foata normal form. 8948/156639 useless extension candidates. Maximal degree in co-relation 416183. Up to 72259 conditions per place.). - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 121/245 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1151664 conditions, 148781 events (70584/148780 cut-off events. For 3015157/3163990 co-relation queries the response was YES. Maximal size of possible extension queue 10752. Compared 1890602 event pairs, 5586 based on Foata normal form. 8948/156639 useless extension candidates. Maximal degree in co-relation 416183. Up to 72259 conditions per place.). - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (69states, 121/245 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1151664 conditions, 148781 events (70584/148780 cut-off events. For 3015157/3163990 co-relation queries the response was YES. Maximal size of possible extension queue 10752. Compared 1890602 event pairs, 5586 based on Foata normal form. 8948/156639 useless extension candidates. Maximal degree in co-relation 416183. Up to 72259 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 261 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 741.9s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 721.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 11482 SdHoareTripleChecker+Valid, 21.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11482 mSDsluCounter, 7192 SdHoareTripleChecker+Invalid, 19.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6695 mSDsCounter, 848 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20368 IncrementalHoareTripleChecker+Invalid, 21221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 848 mSolverCounterUnsat, 497 mSDtfsCounter, 20368 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3317 GetRequests, 2283 SyntacticMatches, 5 SemanticMatches, 1029 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152121 ImplicationChecksByTransitivity, 69.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195592occurred in iteration=15, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 4541 NumberOfCodeBlocks, 4541 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 5601 ConstructedInterpolants, 65 QuantifiedInterpolants, 31490 SizeOfPredicates, 157 NumberOfNonLiveVariables, 3336 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 219/345 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2022-12-06 17:56:18,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 !ENTRY org.eclipse.osgi 4 0 2022-12-06 17:56:18.293 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee6c60e/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ee6c60e/.metadata/.log.